Introduction
Thank you for choosing the POLVCDG-X15 Bone Conduction Headset. This manual provides essential information for setting up, operating, and maintaining your new headset. Please read it carefully before use to ensure optimal performance and longevity of your device.
Package Contents
Ensure all items are present in your package:
- 1 x X15 Bone Conduction Headset
- 1 x USB-C Charging Cable
- 1 x User Manual
Product Overview
Familiarize yourself with the headset's components:

Figure 1: X15 Headset Components
- Power Button
- Plus Button (+)
- Minus Button (-)
- Microphone
- Indicator Light
- USB-C Charging Port
Setup
1. Charging the Headset
Before first use, fully charge the headset.
- Connect the provided USB-C charging cable to the headset's USB-C charging port and to a 5V power adapter (e.g., a standard phone charger, 5V 1A or 5V 2A).
- The indicator light will be steady red during charging.
- Once fully charged (approximately 2-3 hours), the indicator light will turn steady blue.
Important: Do not use fast chargers or chargers with an output greater than 5V, as this may cause overheating and damage to the battery or mainboard.
2. Powering On/Off
- Power On: Press and hold the Power Button for approximately 3 seconds. The indicator light will flash red and blue alternately, indicating the headset is powered on and in pairing mode.
- Power Off: Press and hold the Power Button for approximately 3 seconds. The indicator light will turn off.
3. Bluetooth Connection
For first-time use, after powering on, the headset automatically enters Bluetooth pairing mode (red and blue alternating flashes).
- On your mobile device, enable Bluetooth and search for available devices.
- Select "X15" from the list of devices.
- Once connected, the indicator light will slowly flash blue. When music is playing, the blue light will turn off.
4. Changing Paired Devices
To connect to a different device, first disconnect the X15 from the currently paired device. The headset indicator light will then flash red and blue alternately, allowing other devices to discover and connect to "X15".
5. Downloading Music (for 32GB Memory Version)
The X15 features 32GB of built-in memory, allowing you to listen to music without a mobile phone.
- Connect the headset to your computer using the provided USB-C data cable.
- The headset will appear as a removable disk (U disk) on your computer.
- Open the U disk folder.
- Drag and drop MP3 format music files into the U disk folder.
- Safely eject the headset from your computer once files are transferred.
Video: How to download music to your X15 headset.
Operating Instructions
Power Button Functions
- Power On/Off: Long press for 3 seconds.
- Answer/End Call: Short press during an incoming call or active call.
- Switch Music/Bluetooth Mode: Double-click (memory version only).
Plus Button (+) Functions
- Volume Up: Short press.
- Next Song: Double-press.
- Activate Smart Voice Assistant: Long press for 1 second.
Minus Button (-) Functions
- Volume Down: Short press.
- Previous Song: Double-press.
- Enter Game Mode (Low Latency): Long press.
- Switch Voice Prompts (Chinese/English): Triple-press the Plus (+) button.
Indicator Light Status
- Red and Blue Alternating: Pairing status.
- Blue Slow Flash: Connected, waiting to play.
- Blue Light Breathing: Headset in game low latency mode.
- Steady Red: Charging.
- Steady Blue: Fully charged.
Specifications
| Feature | Detail |
|---|---|
| Model | X15 |
| Bluetooth Version | 5.3 |
| Weight | 25g |
| Battery Capacity | 135mAh |
| Charging Time | Approx. 2-3 hours |
| Playback Time | Up to 10 hours (7 hours at 70% volume) |
| Call Sensitivity | -42dB |
| Waterproof Rating | IP56 (Life waterproof, not for bathing/swimming) |
| Dimensions (L*W*H) | 140mm * 100mm * 46mm |
| Wireless Distance | Up to 10 meters |
| Input Voltage | 5V |
| Bluetooth Protocols | A2DP, AVRCP, HSP, HFP |
| Material | Metal, PVC, ABS, Plastic, TPU, Silica Gel |

Figure 2: X15 Product Parameters
Maintenance and Care
- Cleaning: If sweat or moisture is present on the USB-C silicone plug, wipe it clean before opening the plug for charging. This prevents corrosion and ensures proper charging.
- Charging: Always use a 5V charger (5V 1A or 5V 2A). Avoid fast chargers or any charger exceeding 5V output, as this can damage the headset's battery and internal components.
- Storage: If the headset will not be used for an extended period, ensure it is fully charged at least once a month to maintain battery health.
- Environmental Conditions: Keep the product away from fire, high temperatures, freezing conditions, and harsh chemicals.
- Physical Impact: Avoid violent impacts, disassembly, or extrusion of the product.
- Water Exposure: The X15 is IP56 rated for life waterproof, meaning it can withstand splashes and sweat. It is NOT suitable for bathing or swimming.
Troubleshooting
| Problem | Possible Cause / Solution |
|---|---|
| No sound during Bluetooth playback | Ensure both the mobile device and headset volumes are turned up. |
| No ringtone for incoming calls | Check and increase the headset volume in Bluetooth call mode. |
| Low call volume | Increase the headset volume. Ensure the sound unit is positioned correctly and close to your ear. |
| Headset not charging | Verify the charging cable is securely connected. Ensure the charger is 5V and functioning. Clean any sweat or debris from the USB-C port. |
| Cannot connect to a new device | Ensure the headset is disconnected from any previously paired devices. The indicator should be flashing red and blue alternately. |
User Tips
- Optimal Fit: For the best bone conduction audio experience, ensure the headset sits comfortably and securely on your cheekbones, just in front of your ears.
- MP3 Mode for Freedom: Utilize the built-in 32GB memory and MP3 mode for workouts or activities where you prefer not to carry your phone.
- Stay Aware: The open-ear design allows you to hear ambient sounds, enhancing safety during outdoor activities like cycling or running.
- Keep it Dry: Always wipe down the headset, especially the charging port, after sweating or exposure to moisture to prevent long-term damage.
Warranty and Support
For any issues not covered in this manual, or for warranty inquiries, please contact the seller or POLVCDG customer support through your purchase platform. Keep your proof of purchase for any warranty claims.
A PDF version of this user manual may be available for download from the product page or seller's store for your convenience.