1. Introduction
Thank you for choosing the POLVCDG X7 Bone Conduction Bluetooth Earphones. These earphones are designed for active lifestyles, featuring IPX8 waterproofing, 32GB of internal memory, and Bluetooth 5.3 connectivity, making them ideal for swimming, outdoor sports, and daily use. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.
Product Overview Video
Video demonstrating unboxing, features, waterproof testing, and basic controls of the POLVCDG X7 earphones.
2. Package Contents
Carefully unbox your POLVCDG X7 earphones and ensure all items are present:
- POLVCDG X7 Bone Conduction Earphones
- Magnetic Charging Cable
- Instruction Manual (this document)
- Earphone Fixing Rope
- Accessory Box

Image showing the POLVCDG X7 earphones, magnetic charging cable, instruction manual, and earphone fixing rope.
3. Product Overview
The POLVCDG X7 earphones feature a lightweight and durable design, utilizing bone conduction technology for open-ear listening. They are equipped with an IPX8 waterproof rating and 32GB of internal memory for standalone music playback.
Component Identification

Diagram illustrating the magnetic charging port, volume/track buttons, power/mode button, and microphone.
- Magnetic Charging Port: For charging the device.
- Volume + / Next Track Button: Increases volume, long press for next track.
- Power On/Off / Mode Button: Powers on/off, switches between Bluetooth and MP3 modes, answers/hangs up calls, activates voice assistant.
- Volume - / Previous Track Button: Decreases volume, long press for previous track.
- Microphone: For calls and voice assistant.
4. Setup Guide
4.1 Charging the Earphones
Before first use, fully charge the earphones. When the voice prompt indicates low battery, recharge the device.
- Connect the magnetic charging cable to the charging port on the earphones.
- Ensure the magnetic connection is secure (it should attract, not repel).
- The indicator light will flash red during charging.
- A full charge takes approximately 2 hours, and the indicator light will turn solid blue.
Warning: The rechargeable battery must be disposed of properly for recycling. Do not put the battery into fire to avoid explosion.
4.2 Bluetooth Pairing
To connect your earphones to a device via Bluetooth:
- With the earphones powered off, press and hold the Power On/Off button for 3-5 seconds until the indicator light flashes red and blue alternately. This indicates pairing mode.
- On your device (smartphone/computer), enable Bluetooth and search for available devices.
- Select "X7" from the list to connect.
- Once connected, the earphones are ready for use.
Note: The earphones will automatically attempt to connect to the last paired device upon powering on. If the earphones are out of range (over 10 meters/33 feet) for an extended period, you may need to manually reconnect by pressing the Power On/Off button once they are back in range.
5. Operating Instructions
5.1 Power On/Off
- Power On: Press and hold the Power On/Off button for 1-3 seconds. The indicator light will turn on.
- Power Off: Press and hold the Power On/Off button for 1-3 seconds. The indicator light will turn off.
5.2 Music Playback Controls
| Function | Operation |
|---|---|
| Play/Pause | Click the Power On/Off button once. |
| Volume Up | Click the "+" button. |
| Volume Down | Click the "-" button. |
| Next Track | Long press the "+" button. |
| Previous Track | Long press the "-" button. |
5.3 Call Management
| Function | Operation |
|---|---|
| Answer Call | Click the Power On/Off button once during an incoming call. |
| Hang Up Call | Click the Power On/Off button once during a call. |
| Reject Call | Long press the Power On/Off button for 2 seconds during an incoming call. |
5.4 AI Intelligent Voice Control
When connected via Bluetooth, you can activate your device's voice assistant:
- Activate Voice Assistant: Long press the Power On/Off button for 1 second. You will hear a prompt tone.
Note: Your phone must support voice wake-up functionality for this feature to work. This allows for hands-free control, such as asking for the time, weather, navigation, or controlling music playback.
5.5 Bluetooth/MP3 Mode Switching
The POLVCDG X7 earphones feature both Bluetooth and internal MP3 player modes:
- Switch Mode: Double-click the Power On/Off button to toggle between Bluetooth mode and MP3 (internal memory) mode.
Note: The earphones default to Bluetooth mode upon powering on.
5.6 Song Download (MP3 Mode)
To transfer music files to the earphones' 32GB internal memory:
- Connect the magnetic charging cable to the earphones and then to your computer.
- The earphones will be recognized as a USB drive.
- Copy your desired MP3, WMA, WAV, APE, or FLAC audio files to the earphone's storage.
6. Care and Maintenance
- Water Exposure: Do not soak the earphones in seawater or saltwater for extended periods. After use in water, rinse thoroughly with fresh water and dry completely, especially the magnetic charging contacts, to prevent corrosion.
- Storage: If not used for a long time, ensure the earphones are fully charged at least once a month to maintain battery health.
- Cleaning: After each exercise or water exposure, wipe the surface of the earphones dry. Pay special attention to the charging port to prevent sweat and saltwater from corroding it and affecting product lifespan.
- Handling: Keep the product away from fire, heat sources, freezing temperatures, and chemicals. Avoid violent impacts, disassembly, or squeezing the product.
- Charging Adapter: Use a charging adapter with an output of 5V/1A or less. Do not use fast chargers, as this can damage the earphones.
7. Specifications
| Feature | Specification |
|---|---|
| Model | X7 |
| Bluetooth Version | 5.3 |
| Wireless Range | 8-10 meters |
| Battery Capacity | 200mAh |
| Battery Life | Up to 10 hours (at 65% volume) |
| Charging Time | Approx. 2 hours |
| Input | 5V/170mA |
| Waterproof Rating | IPX8 (Deep water immersion) |
| Internal Memory | 32GB (stores over 6000 songs) |
| Audio Decoding | SBC, HD AUDIO |
| Music Format Support | MP3, WMA, WAV, APE, FLAC |
| Material | Metal, PVC, ABS, Plastic, TPU, Silica Gel |
| Weight | 30g (approx.) |
| Dimensions (approx.) | Width: 112mm, Depth: 135mm, Height: 45mm |
| Features | Waterproof, With microphone, Active Noise-Cancellation, Volume Control, Control Button, Sound Isolating, NFC Technology, Support APP, Detachable Cable, Dual Connection, Playback Control, Google Assistant Support, Apple Siri Support, Amazon Alexa Support |
| Vocalism Principle | Bone Conduction |
| Certification | CE, FCC, RoHS |
8. User Tips
- Connecting to a New Phone: If you need to connect your X7 earphones to a different phone, first ensure the earphones are disconnected from the previous device. Then, follow the Bluetooth pairing instructions (Section 4.2) to pair with the new phone. If issues persist, try resetting the earphones by powering them off and on again before initiating pairing.
- Swimming Use: For optimal performance and longevity during swimming, use the MP3 mode to play music directly from the internal 32GB memory. This avoids potential Bluetooth signal interruptions underwater. Always rinse the earphones with fresh water and dry them thoroughly after use in chlorinated or saltwater.
- Comfortable Fit: The titanium alloy memory bracket is designed for flexibility and durability. Adjust the earphones gently to ensure a snug and comfortable fit around your ears for the best bone conduction experience.
9. Troubleshooting
- Cannot Power On: Ensure the earphones are fully charged. If the battery is completely drained, it may take a few minutes of charging before they can power on.
- Cannot Pair via Bluetooth: Make sure the earphones are in pairing mode (red and blue indicator lights flashing alternately). Ensure Bluetooth is enabled on your device and it is within 10 meters of the earphones. Try turning Bluetooth off and on again on your device.
- No Sound/Poor Sound Quality: Check the volume levels on both the earphones and your connected device. Ensure the earphones are properly positioned on your cheekbones. If using MP3 mode, verify that music files are correctly loaded onto the internal memory.
- Charging Issues: Ensure the magnetic charging cable is securely connected and the contacts are clean and dry. Use a 5V/1A or lower charging adapter.
- Earphones Disconnect Frequently: Ensure there are no obstructions between the earphones and your device. Move closer to your device to rule out range issues. Avoid environments with strong electromagnetic interference.
10. Warranty and Support
Your POLVCDG X7 earphones come with a product warranty. Please retain your purchase receipt and the product warranty card for any warranty claims. For detailed warranty terms and conditions, refer to the included warranty card.
For further assistance or to view the original user manual in PDF format, please refer to the official documentation provided by the seller. A PDF version of the user manual is available here.