Welcome to the official user manual for the RECOLX Fit 2 smart recording AI earbuds. This comprehensive guide covers everything from hardware controls to advanced AI transcription and real-time translation features.
1. App Download & Account Registration & Device Overview
The RECOLX App is your central hub for device binding, OTA updates, AI transcription, translations, and file management.
How to Download:
Search for 'RECOLX' in the App Store or Google Play to download the RECCDLX app.
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Registration & Login:
Open the app or visit the official web portal at https://app.recolx.ai/login.
Go to the login page and select login method.
You can register a new account via Email, or utilize quick third-party authentication via Google Account or Apple ID.
Troubleshooting: If the earbuds fail to sync or connect with the app, please uninstall and download the latest version from your mobile app store.
Device Overview
1. Earbud Indicator: Show power, pairing and charging status
2. Microphone: For voice input and phone calls
3. Touch Control: Control playback, volume and calls
4. Speaker: Audio output
5. Charging Contacts: Power connection for charging
6. Multi-Function Button: Pairing, reset and power on/off
7. Case Indicator Light: Display charging status of charging case
Put on the earbuds
- Take out the earbuds and place them above your ears. Rotate them along your outer ears to the appropriate position, then insert the ear tips into your ears.
- Gently press the ear tips and rotate the ear hooks back and forth until they fully conform to your outer ears to complete the wearing process.
2. Hardware Operation & Device Binding
2.1 Power On, Manual Pairing, and Bluetooth Connection
Keep the earbuds and your smartphone within a 1-meter radius during the initial pairing process.
Connect via system bluetooth preparation
- Enable Bluetooth in the phone's system setting;
- Disconnect other Bluetooth devices to avoid interference.
Automatic Power On: Open the charging case and remove the earbuds; they will turn on automatically, you will hear an audible voice announcement saying "Power on" through the earbuds.
Earbud-to-Earbud Pairing (Auto-Paired): The left and right earbuds are paired automatically by default before leaving the factory. Simply remove them from the case, and the main earbud will flash red and blue alternately, signifying that it has entered phone pairing mode.
Phone Bluetooth Connection: Turn on Bluetooth on your smartphone, locate the available device list, and select "Recolx Fit 2" (or the corresponding actual product name) to connect.
Connection Successful: Once connected, you will hear an audible voice announcement saying "Connected" through the earbuds, the earbud LED indicators will turn off.
Auto-Reconnect & Reset:
Automatic Reconnection: Every time you open the charging case, the earbuds will automatically reconnect to the last paired device, provided your pairing history has not been cleared.
Power Off: Placing the earbuds back into the charging case and closing the lid turns them off. They will also automatically power down after 5 minutes of no active Bluetooth connection.
Reset & Re-pair: Open the charging case. Leave the earbuds inside and hold the case button for 3 seconds to clear pairing history and enter pairing mode.
Note: Manually entering pairing mode will clear all existing Bluetooth connections. Please use this feature with caution.
2.2 App Device Pairing and Binding
Complete the phone-level Bluetooth pairing outlined in section 2.1 first.
Launch the RECOLX App and log in.
Tap the [My Recolx Device] / [Connect] icon in the upper-left corner of the homepage to enter device management.
The app will scan for available nearby hardware. Click your device to bind. Once successfully bound, the app will display "Connection successful" along with real-time battery status.
Daily Use: For future sessions, simply open the app while wearing your connected earbuds, and they will connect automatically.
2.3 Device Unbinding
Unbinding dissociates the hardware from your current RECOLX account, allowing it to be paired with another account. When unpairing the device, both the phone's system-level Bluetooth connection and the App connection will be disconnected simultaneously.
โ ๏ธ Important Note: Membership benefits and service quotas (such as Pro minutes) are tied directly to the user account. Unbinding the hardware will not transfer, refund, or alter any previously claimed account perks.
๐ง 2.4 Earbud Equalizer (EQ) Settings
Optimize your listening experience. Whether you are focusing on a business meeting, jumping into an international call, or winding down with your favorite music, the RECOLX App allows you to fine-tune your audio settings perfectly.
When the earbuds are connected, tap Equalizer in the device details page to customize your sound preferences.
Flow๏ผ
Connected earbuds โ Device details โ Scroll to bottom โ Equalizer โ EQ settings
Equalizer
Clear & balanced sound for music, podcasts, and recordings.
Spatial Audio
More immersive sound for movies, games, and live content.
| EQ Option | Description |
|---|---|
| Normal | Balanced for everyday use |
| Rock | Powerful bass and crisp highs |
| Pop | Clear vocals and smooth bass |
| Classic | Natural and detailed sound |
| Country | Warm vocals and soft instruments |
| Jazz | Smooth mids with rich detail |
| Vocal enhancement | Clearer voices and speech |
| Volume boost | Louder sound with clarity |
| Extra bass | Deeper and stronger bass |
| Custom | Adjust your own sound |
2.5 Essential LED & Operations Reference
The earbuds feature intelligent voice prompts to guide you through different device statuses and volume thresholds.
| Status / Mode | Action / Operation | LED Indicator Status | Voice / Beep Prompt |
|---|---|---|---|
| Power On | Open the charging case lid. | Flashes red then blue. Main earbud flashes red/blue alternately. | "Power on" |
| Power Off | Place earbuds back into the case and close the lid. | Turns off completely. | "Power off" |
| Pairing Mode | Open the case and search via your phone's Bluetooth. | Main earbud's light turns off upon successful connection. | "Connected" |
| Disconnected | Turn off Bluetooth on your phone. | Flashes red and blue alternately. | "Disconnected" |
| Play / Pause | Double-tap either the Left or Right earbud. | Stays off during music playback |
Beep Tone: "Ding"
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| Answer / Hang Up | Double-tap either earbud during an incoming/active call. | Stays off during phone calls |
Beep Tone: "Ding"
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| Factory Reset | When disconnected: Place earbuds in case, double-tap both touch points, then hold for 2s. | Flashes red for 1s โ flashes red for 0.5s โ flashes red/blue alternately. |
"Power on" (x2) followed by an alert tone
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| Clear Pairing History | Keep earbuds in case, keep lid open, press case button for 3s. | Main earbud light turns off, then flashes red and blue alternately. | Alert tone sound |
2.6 Battery & Charging Status (Earbuds & Case)
| Device | Current Status | LED Indicator Status | Voice Prompt |
|---|---|---|---|
| Earbuds | ๐ Charging in Progress |
Earbuds: Solid Red Charging Case: Solid Blue |
None |
| Earbuds | โ Fully Charged |
Earbuds: Solid Red Charging Case: Turns Off |
None |
| Earbuds | โ ๏ธ Low Battery | Earbuds: Flash Red slowly | "Battery low" |
| Charging Case | ๐ Case Charging | Charging Case: Solid Red | None |
| Charging Case | โ Case Fully Charged | Charging Case: Solid Blue | None |
3. App: Main Interface & Core Features Guide
๐บ๏ธ App Navigation & Default Home Tab Settings
Initial Connection: Once your earbuds are successfully connected to the app, you will be directed straight to the [Files] tab (the folder icon on the bottom left) by default.
Accessing Core Features: To switch to the main dashboard (Core Features), simply tap the [RECOLX Logo Button] located in the center of the bottom navigation bar.
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Customizing Your Home Screen: If you want to change your default landing page when the app opens, you can customize your preferences:
Tap the [Account Center] icon (the profile avatar) on the bottom right.
Select [Preference].
Choose your desired view to set your Default Home Tab.
๐ Global Language Support
All translation and interpretation features in the RECOLX App comprehensively support 145 languages, including various regional accents and dialects (e.g., English, Chinese, Japanese, Korean, Russian, and more) to ensure seamless global communication.
๐ 3.1 Simultaneous Interpretation (Meetings & Lectures)
Best for listening to international conferences, academic lectures, or speeches where you only need one-way real-time translation.
๐ Key Features & Technology Advantages
Dual-Display & Audio Sync: Translation results are presented in a clean bilingual subtitle format (Original + Translated text). Users can conveniently tap any text paragraph to instantly jump and listen to the corresponding audio segment.
๐ก Quick Operating Tips
Optimal Setup: Please place your smartphone close to the speaker to capture clear audio, and wear your earbuds to listen to the real-time translation.
๐ Step-by-Step Instructions
Step 1: On the App's main interface, locate and tap the [Simultaneous Interpretation] card.
Step 2: In the pop-up menu, select your Source Language (the speaker's language) and Target Language (the language you want to hear).
Step 3: Tap the [Tap to talk] button at the bottom. Wear your earbuds and use your smartphone's microphone to pick up the audio, ensuring it is placed close to the speaker or sound source for optimal accuracy.
Step 4: As the phone captures the audio, the translated text will display instantly on the App screen in your selected target language.
๐ง Audio Playback Settings:
Manual Playback: Tap any translated sentence on the screen, and the earbuds will read the translated content aloud.
Auto Broadcast: If you have enabled the "Auto Broadcast" feature in the settings, the translated audio will automatically and synchronously play back through your earbuds as soon as it appears on the screen.
๐๏ธ Controls & Auto-Save:
To Pause: Tap [Stop talking] to temporarily pause the current session.
To End & Save: Simply exit the current page. This will officially end the conversation, and the app will automatically save the complete translation record securely to your recording file list.
๐ฃ๏ธ 2. Face-to-Face Translation (In-Person Conversations)
Best for 1-on-1 natural conversations with foreign speakers. You hold and operate the smartphone throughout the session while wearing your earbuds, guiding the conversation seamlessly.
๐ก Quick Tips:
Hardware Setup: All audio is captured via your smartphoneโs microphone. You hold the phone and wear the earbuds. Your partner does not need to handle the phone; they simply speak toward your phone and listen to its speaker.
Extensive Language Support: Easily cross language barriers with access to 145 supported languages, including regional accents and dialects.
Step 1: On the app's main interface, locate and tap the [Face-to-Face Translation] card.
Step 2: Configure your language preferences by selecting [Your Language] (your native tongue) and [Partnerโs Language] (the other person's language).
Step 3: Manage the real-time conversation using the two on-screen buttons:
๐๏ธ Interactive Button Controls (Operated Entirely by You):
When YOU Speak (Left Side Button): 1. Tap the left [Tap to talk] button and start speaking. The app screen will instantly transcribe your voice and translate it in real time. 2. Once you finish speaking, tap [Stop talking]. The app will automatically broadcast the translation aloud through the smartphone's speaker so your partner can understand you.
When YOUR PARTNER Speaks (Right Side Button): 1. Tap the right [Tap to talk] button and point the phone toward your partner. They can now speak directly into the phone's microphone as the screen transcribes and translates their words. 2. Once they finish speaking, tap [Stop talking]. The translated audio will play back privately through your earbuds so you can understand them.
๐๏ธ Controls & Auto-Save:
To End & Save: Simply exit the current page. This will officially end the conversation, and the app will automatically save the complete translation record securely to your recording file list.
๐ 3. Call Translation (For Phone & VoIP Calls)
Best for real-time translation during phone calls, video calls, or international business teleconferences, providing automatic bilingual subtitles to keep both parties in sync.
๐ก Quick Setup Tip: Initiate or answer your voice/video call first, then activate this feature.
Step-by-Step Instructions:
Answer or initiate a regular phone call or VoIP video/voice call (such as WeChat, WhatsApp, etc.) on your mobile device.
Return to the app interface and tap the [Call translation] card.
Select your desired language pair. Before starting, customize your preferences by toggling [Auto-Play Voice] on/off and adjusting the [Text Size] to your liking. Once configured, tap [Tap to talk] to start the service.
๐๏ธ How the Translation Works During Your Call:
When YOU Speak: The app automatically transcribes your voice, translates it, and transmits the translated audio directly to your partner over the call.
When THE OTHER PARTY Speaks: The app automatically captures their voice and translates it into your native language. Their translation will be displayed in real time as bilingual text on the App screen for you to read.
๐๏ธ Controls & Auto-Save:
To End & Save: Once your phone call finishes, exit the page. The app will automatically save the complete session and audio record securely to your recording file list.
๐ 3.4 Other Transcription๏ผRecord & Transcribe | Across Scenarios๏ผ
Choose your preferred transcription method based on your specific scenario:
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๐๏ธ Live transcription: Best for: Interviews, small meetings, and real-time face-to-face transcription.
How it works: Captures live, ambient voice input via microphones and converts it into text on your screen in real time.
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๐ Call Transcribing: Best for: Regular phone calls, online meetings, or VoIP calls.
How it works: Seamlessly transcribes both sides of an active voice/video conversation in real time.
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๐ฌ Audio and video transcription: Best for: Media playback. Play relevant audio and video files, and transcribe them in real time.
How it works: Extracts and transcribes audio dynamically while a video or audio file is actively playing on your device.
Step-by-Step Instructions
Step 1: On the feature selection interface, tap your preferred transcription scenario to enter. The app will immediately and automatically start recording audio.
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Step 2: Interact with the real-time tools on the screen based on your needs:
Real-Time Transcription: Tap the [A] icon to instantly convert the captured audio into text on your screen.
AI Agent Analysis: Tap the [Crown] AI icon to choose an AI Agent for real-time analysis, summary, or insights on your ongoing conversation.
๐๏ธ Controls & Auto-Save:
To Pause: Tap the [Pause] button to temporarily stop the live recording and real-time transcription.
To End & Save: Tap the [End] button to officially stop the session. The app will automatically save the complete audio file and transcript securely to your recording file list.
๐ฅ 3.5 Import Files (Audio & Video Transcription)
Best for transcribing pre-recorded media files. Easily import your lectures, interviews, meetings, or video clips directly from your smartphone's local storage or photo album, and let the RECOLX App handle the rest.
๐ก Quick Tips:
Import Verified Files: The app officially supports and verifies the following formats: "mp3", "wav", "mp4", "mov", "m4a", "aac".
Hardware Setup: Ensure your Recolx earbuds are connected to your mobile device if you wish to listen to the original media audio privately while monitoring the text output.
๐ Step-by-Step Instructions
Step 1: On the feature selection interface, tap the [Audio and video transcription] card.
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Step 2: A pop-up menu will appear at the bottom of the screen. Choose your file source based on where your media is saved:
๐ [Files]: Tap this to browse and import audio or video files from your smartphone's local document storage, iCloud, or cloud drives.
๐ผ๏ธ [Select from album]: Tap this to open your phone's system gallery/photo album and directly import video recordings or voice memos saved in your camera roll.
Step 3: Once the file is selected, the corresponding audio file will be imported and automatically saved to your recording file list.
๐ณ 3.7 RECOLX Membership & Quota Usage Rules
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Free Features:
Pure Live Recording: Using the app as a standard voice recorder without text processing is completely free.
Basic Earbud Features: Most standard real-time transcription features on the earbud function page DO NOT require a PRO membership (however, they will still consume your available transcription minute quota).
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๐ Paid & Premium Features (PRO Membership):
Full Speech-to-Text Processing: Access to high-accuracy, long-duration live transcription and file uploads.
Comprehensive File Export: Unlocked capability to export complete, polished text files (TXT/PDF/Docx) and session summaries.
Advanced AI Templates & Agent Analyses: Full access to specialized AI Agents for deep-dive conversation analysis, meeting minutes extraction, and custom templates.
โจ Simultaneous Summary: Exclusive ability to generate a structured AI summary concurrently in real-time while the live transcription is still running.
Premium Multilingual Engine: Seamless real-time processing and translation across 145+ supported languages and bilingual dual-row subtitles.
๐ Hardware Quotas & PRO Membership Rules
To provide you with the best experience, RECOLX offers a combination of Hardware-Bound Minutes and Premium PRO Subscription Quotas:
๐ Device Activation Gift: When you bind your Recolx hardware device for the first time, you will automatically receive a 3-Month Free Trial of our PRO Membership.
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๐ Total Transcription Quota (First 3 Months): Upon binding, you will have a total of 1,800 transcription minutes available to use:
Device Quotas: 600 minutes (permanently tied to your hardware device).
PRO Bonus Quotas: 1,200 extra minutes (provided by the 3-month complimentary PRO membership).
โ ๏ธ Crucial Notices on Quota Depletion & Limitations
No Remaining Quota = No Live Transcription: > Please note that speech-to-text processing is heavily quota-dependent. If your total remaining transcription minutes reach 0 (zero), the standard real-time transcription feature will no longer function, even for basic earbud features. You will need to purchase additional minute packs or renew your subscription to resume transcription.
๐ Call Transcribing & Call Translation (Double Consumption): > As these features process dual-audio streams (both your voice and the caller's voice simultaneously), they will consume double the standard minute quota from your remaining balance (e.g., a 10-minute phone call will deduct 20 minutes from your quota).
3.8 Tips for Maximum Accuracy
Always record in quiet environments to minimize ambient background noise.
Utilize custom AI templates to set specialized rules (e.g., automatically filtering out filler words or using contextual prompts to fix homophones).
4. Storage, File Synchronization & Management
4.1 Audio Storage Mechanism
Upon exiting the current page after completing operations within the core features, the file will be automatically saved to the recording file list.
Local Storage Priority: By default, your recording files are securely saved directly in the local storage of your smartphone. You can access, play, or delete them offline at any time.
Cloud Processing: When using cloud-based transcription or AI analysis, audio data is temporarily transmitted to our secure cloud servers. To protect your privacy, this data is not stored permanently on the servers (unless Cloud Sync is explicitly turned on) and will be completely wiped within a reasonable timeframe.
Cloud Sync (Optional): To back up files, go to [Account Center] โ [Cloud]. Here you can toggle Private Cloud Sync on/off or permanently wipe all backed-up data. Warning: Cloud deletion is permanent and cannot be undone.
4.2 Managing Local Audio
Use the app's file list to view, import, transcribe, move, or export your recordings. When your smartphone or device storage runs low, you can manage and permanently delete local audio files via the mobile app or the web portal.
Choose a file source: Sync an existing hardware recording, complete a live session to auto-save, or tap [Import File] to upload compatible audio/video files from your phone's native file manager.
Select the file from your app list and tap [Transcribe].
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Transcription Settings: Set the spoken language, turn on speaker diarization, or activate simultaneous summarization.
Speaker Diarization: Check [Diarization] to let the system automatically detect, separate, and label different speakers.
Simultaneous Summary: Check [Simultaneous Summary] to generate an AI summary concurrently with your text transcript. (Note: This feature is exclusive to PRO members to guarantee maximum accuracy).
This section can directly reference the Recolx APP feature introductions.
โ ๏ธ Crucial Product Logic Notice: > Please note that recordings from the Face-to-Face Translation scenario CANNOT be re-transcribed. Because these sessions inherently contain two different languages, running them through file re-transcription will fail to process correctly.
5. Device Control Guide (Gesture Touch Matrix)
The touch-sensitive multi-function buttons (MFB) are located on the stems/sides of the earbuds.
| Function | Action (Left Earbud) | Action (Right Earbud) |
|---|---|---|
| Power On | Open case / Long-press for 2s | Open case / Long-press for 2s |
| Power Off | Place in case / Auto-off after 5 mins | Place in case / Auto-off after 5 mins |
| Play / Pause | Single-click | Single-click |
| Previous Track | Long-press for 1 second | โ |
| Next Track | โ | Long-press for 1 second |
| Increase Volume | Double-click | โ |
| Decrease Volume | โ | Double-click |
| Answer Call | Single-click | Single-click |
| Reject Call | Long-press for 1 second | Long-press for 1 second |
| End Call | Single-click | Single-click |
| Voice Assistant | Triple-click (when audio is idle) | Triple-click (when audio is idle) |
| Close Assistant | Single-click MFB | Single-click MFB |
6. Battery Charging & Maintenance
The RECOLX Fit 2 utilizes high-performance polymer lithium-ion batteries.
6.1 Charging Instructions
โ ๏ธ Prerequisite: Ensure both earbuds and the USB-C charging port are completely dry and free of sweat before charging.
Place the earbuds securely into the charging slots and close the lid.
Connect the included Type-C charging cable to a certified safety-compliant 5V, 1A wall adapter/charger or directly into a computer USB port.
The power indicator will illuminate to show charging status.
Once charging is complete, disconnect the power source first before removing the cable from the case.
6.2 Battery Safety Precautions
Do not allow children to handle charging operations unsupervised. Keep the device out of reach of children while charging.
Disconnect the charger promptly once the battery is fully charged; avoid leaving it plugged in for extended periods.
Do not attempt to disassemble the built-in battery yourself.
The included charging cable is optimized specifically for this product; do not use it on incompatible external hardware.
7. Troubleshooting & Firmware Updates
7.1 Abnormal Hard Reset Procedure
If the earbuds fail to pair, exhibit connection dropping, or experience unknown system freezes, follow these reset steps:
Disconnect the earbuds from your phone's Bluetooth menu.
While the earbuds are out of the case and disconnected, double-click and then immediately long-press the MFB for 2 seconds to force power them off.
Place them back into the charging case and close the lid, then open the case again. The earbuds will automatically reboot, execute self-pairing, and be ready to connect fresh to your mobile device.
7.2 Over-The-Air (OTA) Firmware Updates
When your earbuds are connected to the app, you will receive a push notification when a new firmware patch is released.
To update, place the earbuds inside the charging case and leave the case lid open.
Ensure your phone has a stable internet connection and keep the app running until the update progress bar hits 100%. Do not wear or use the earbuds during an active update.
8. Hardware Specifications
Specifications are subject to engineering changes without prior notice.
Power Input: 5V $\dots$ 1A
Power Output: 5V $\dots$ 0.2A
Battery Capacity: 400mAh (Charging Case)
Charging Time: Earbuds: < 1 Hour; Charging Case: 2 Hours; Combined Case + Earbuds: 2.5 Hours
Frequency Range: 20 Hz โ 20 kHz
Rated Power: 10mW
Bluetooth Version: BLE 5.0
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Storage & Operating Environment: * Store in a dry, well-ventilated room away from fire, high heat, and corrosive materials.
If stored long-term, recharge the product once every 3 months to preserve battery health.
Operating Temperature: 0ยฐC to 40ยฐC
Storage Temperature: -10ยฐC to 45ยฐC
Operating/Storage Humidity: < 70% RH
9. Maintenance, Cleanliness & Legal Compliance
91.1 Cleaning Protocols
After every use, wipe the exterior of the earbuds with a soft, clean, dry cloth or a specialized detail brush. Pay extra attention to the metallic charging contacts; clean them gently with a dry cotton swab to prevent sweat or oil accumulation from causing charging failures or power-off issues.
9.2 Legal Notice & Compliance
Please ensure you use all recording and translation functions in strict compliance with your local laws and legal regulations.
In many global regions, recording audio or conversations requires the explicit, prior consent of all participants.
RECOLX assumes no legal liability for any unauthorized, non-compliant, or illegal recording activities conducted by the user.
10. Global Customer Service Information
If you encounter any operational difficulties or hardware anomalies, feel free to contact our dedicated support team:
Official Support Email: support@recolx.ai
Official Website: https://recolx.ai
Service Commitment: Monday to Friday; our support team will respond to all inquiries within 12 hours.