Introduction
This manual provides detailed instructions for the safe and efficient use of your POLVCDG X7 Bone Conduction Headset. Please read this manual thoroughly before operating the device and keep it for future reference.
Safety Precautions
- Earphones should not be soaked in seawater or saltwater for extended periods. After use in water, rinse with clean water and dry thoroughly. The magnetic charging port is susceptible to corrosion.
- If the device is not used for a long time, ensure it is fully charged at least once a month to maintain battery health.
- After each exercise, clean any water from the surface of the earphones, especially around the charging magnet position. This prevents sweat and saltwater from corroding the charging port and affecting the product's service life.
- Keep the product away from fire, high temperatures, freezing conditions, and chemicals. Avoid violent impacts, disassembly, or extrusion of the product.
- Do not use a fast charger to charge the headphones.
- Use a 5V 1A or 5V 2A charging adapter for optimal charging.
Note: Failure to follow these instructions may result in product damage, for which the manufacturer will not be responsible.
Package Contents
Please check the box for the following items:
- POLVCDG X7 Bone Conduction Headset
- User Manual
- Magnetic Charging Cable
Product Overview and Controls
The POLVCDG X7 headset features an intuitive design with easily accessible controls. Familiarize yourself with the button layout and indicators:

Key Functions:
- Volume - / Previous Song Button: Decreases volume, long press for previous track.
- Power Button: Power On/Off, Play/Pause, Answer/Hang Up Calls, Mode Switching.
- Volume + / Next Song Button: Increases volume, long press for next track.
- Indicator Light/Status Light: Displays device status (pairing, charging, fully charged).
- Charging Port: Magnetic connection for charging cable.

Setup Guide
1. Charging the Headset
Before first use, fully charge the headset. Connect the magnetic charging cable to the charging port. A full charge takes approximately 2 hours.
- Charging Indication: The indicator light will be red while charging.
- Fully Charged Indication: The indicator light will turn blue when fully charged.
2. Bluetooth Pairing
- Ensure the headset is powered off.
- Long press the Power button for 3-5 seconds until the indicator light flashes red and blue alternately. This indicates the headset is in pairing mode.
- On your mobile device (phone, tablet, or computer), enable Bluetooth and search for available devices.
- Select "POLVCDG X7" from the list to connect. Once connected, the indicator light will turn blue.
The headset will automatically connect to the last paired device upon startup if it is within a 10-meter range.
Operating Instructions
Power On/Off
- Power On: Long press the Power button for 3 seconds until the indicator light turns on.
- Power Off: Long press the Power button for 3 seconds until the indicator light turns off.
Music Playback
- Play/Pause: Short press the Power button.
- Next Song: Long press the Volume + button.
- Previous Song: Long press the Volume - button.
- Increase Volume: Short press the Volume + button.
- Decrease Volume: Short press the Volume - button.
Call Operations
- Answer a Call: Single click the Power button.
- Hang Up a Call: Single click the Power button.
- Reject a Call: Long press the Power button for 2 seconds.
Voice Assistant
When in Bluetooth connection status, long press the Volume + button to wake up the voice assistant.
- Precaution: Your mobile phone must support the voice wake-up function.
- For versions without internal memory, long press the Power button to activate the voice assistant.
Bluetooth/MP3 Mode Switching
Double-click the Power button to freely switch between Bluetooth mode and MP3 (TF card) mode.
- Precaution: The device automatically defaults to Bluetooth mode when powered on.
- When playing songs in MP3 mode, click the Power button three times to switch between random and sequential playback modes.
Song Download (for MP3 Mode)
To transfer music files to the headset's internal 32GB memory:
- Use the provided magnetic charging cable to connect the headset to a computer.
- The computer will recognize the headset as a USB disk.
- Open the recognized "U disk" drive on your computer.
- Drag and drop your MP3, WMA, WAV, APE, or FLAC audio files into the headset's storage folder.
Maintenance
- Regularly clean the earphones with a soft, dry cloth.
- After swimming or intense exercise, ensure the headset is rinsed with fresh water and thoroughly dried, especially the charging contacts, to prevent corrosion.
- Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid exposing the headset to harsh chemicals or solvents.
Specifications
| Feature | Specification |
|---|---|
| Model | X7 |
| Waterproof Level | IPX8 (up to 20 meters deep) |
| Wireless Version | Bluetooth 5.3 |
| Internal Memory | 32GB (stores 6000+ songs) |
| Battery Capacity | 200mAh |
| Charging Time | Approx. 2 hours |
| Battery Life | Up to 10 hours (at 65% volume) |
| Transmission Distance | 8-10 meters (<10m) |
| Music Format Support | MP3, WMA, WAV, APE, FLAC |
| Weight | 32g |
| Material | PVC, ABS, Plastic, TPU, Silica Gel |
| Driver Diameter | 16.3mm |
| Impedance Range | Up to 32 Ω |
| Frequency Response | 20 - 20000Hz |
| Sensitivity | 42dB |
| Speaker Max Output Power | 100mW |
| Voice Assistant Built-in | Yes |
| NFC Technology | Yes |
| Control Method | Push button |
| Vocalism Principle | Bone Conduction |
| Certifications | CE, FCC, RoHS |
| FCC ID | 2AXV7-X7B |
Troubleshooting
If you encounter any issues with your POLVCDG X7 headset, please try the following common solutions:
- No Power: Ensure the headset is fully charged.
- Cannot Pair: Make sure the headset is in pairing mode (flashing red and blue) and your device's Bluetooth is enabled. Try restarting both devices.
- No Sound: Check the volume levels on both the headset and your connected device. Ensure the headset is not in MP3 mode if you intend to use Bluetooth, or vice-versa.
- Poor Sound Quality: Ensure the headset is within the 10m Bluetooth range of your device. Check for any obstructions between the headset and your device.
- MP3 Mode Issues: Verify that audio files are in a supported format (MP3, WMA, WAV, APE, FLAC) and are properly transferred to the internal memory.
For persistent issues, please refer to the official product support channels.
User Tips
- When swimming, always switch to MP3 mode for optimal performance and to avoid Bluetooth connectivity issues underwater.
- For the AI intelligent voice control feature, ensure your mobile phone supports the voice wake-up function.
- Regular cleaning of the charging contacts after each use, especially after exposure to sweat or water, will prolong the life of your headset.
- The lightweight design (32g) makes it comfortable for extended wear during various activities like running, cycling, and fitness.
Warranty and Support
For detailed warranty information and customer support, please refer to the official product documentation or contact the seller directly. The user manual in PDF format can be viewed here.