1. Introduction and Overview
The POLVCDG X9 Bone Conduction Earphones are specifically designed for active lifestyles, offering a unique audio experience for swimming, running, cycling, and other sports. With an IPX8 waterproof rating and 32GB of built-in memory, these earphones are built to withstand challenging environments and provide immersive sound without blocking your ears. POLVCDG is committed to integrating technology and innovation to deliver a comfortable and high-quality sports audio experience.

POLVCDG X9: Designed for swimming, running, and cycling with IPX8 waterproofing and 32GB memory.

Brilliant color matching and open design for all-scenario applicability.
2. Package Contents
Please check the box for the following items:
- Outer envelope
- Inner box
- POLVCDG-X9 Bone Conduction Earphones
- Accessory box
- Instruction Manual + Brand Introduction Booklet
- Magnetic charging cable
- POLVCDG elastic strip

Product Details: What's included in the box.
3. Product Features and Highlights
The POLVCDG X9 earphones boast a range of features designed for performance and convenience:
- IPX8 Waterproof Rating: Suitable for swimming, heavy rain, intense exercise, outdoor rinsing, and showering.
- 32GB Built-in Memory: Store a massive number of songs for offline playback, perfect for swimming or when a phone is not accessible.
- Bone Conduction Technology: Delivers audio through your cheekbones, keeping your ears open to ambient sounds for safety.
- Bluetooth V6.0 & NFC Technology: Seamless wireless connectivity and easy pairing with compatible devices.
- 10-Hour Battery Life: Enjoy extended listening sessions with a powerful battery.
- 2-Hour Magnetic Fast Charging: Quickly recharge your earphones to keep your sports going non-stop.
- 360° Surround Stereo Sound: Optimized for a panoramic and immersive audio experience.
- Multi-layer Noise Reduction: Sports-specific noise reduction for clear sound.
- Voice Assistant Built-in: Control music and calls with Amazon Alexa, Apple Siri, or Google Assistant support.
- Open-Ear Stable Fit: Designed for comfort and stability during vigorous activities.
- Playback Control & Volume Control: Easy management of your audio directly from the earphones.

Six major functions of the POLVCDG X9 earphones.

Key features and technologies of the X9 earphones.
4. Setup Guide
4.1. Initial Charging
- The headphones have a built-in rechargeable battery. For first-time use, ensure the battery is fully charged.
- If you hear a 'drip-drip' voice prompt indicating low battery, charge the headphones promptly.
- Connect the magnetic charging cable to the magnetic charging port on the headphones.
- The indicator light will be red during charging and turn blue when fully charged. A full charge takes approximately 2 hours.

Magnetic fast charging technology for quick power recovery.
4.2. Bluetooth Pairing
- Enter Pairing State: The earphones will automatically enter pairing mode upon powering on. The blue light will remain on for 1 second, then the red and blue indicator lights will flash alternately.
- Pair with Mobile Phone/Computer: Turn on the Bluetooth function on your device (mobile phone/computer).
- Search for the device name "POLVCDG X9" in the list of available devices.
- Tap "POLVCDG X9" to pair and connect.
- Once the connection is successful, the blue light will flash quickly twice.
4.3. Song Download (for 32GB Internal Memory)
To utilize the built-in 32GB memory for MP3 playback:
- Connect the headphones to your computer using the provided magnetic charging cable.
- On your computer, open the disk drive that appears for the headphones.
- Drag and drop your audio files (MP3, M4A, WAV, WMA, FLAC, AAC formats supported) into the headphone's disk.

32GB built-in memory for storing a massive number of songs.
5. Operating Instructions (Smart Buttons)
The multi-function control button on the headset allows you to manage calls, music playback, switch listening modes, and activate voice assistants.

Instructions for Smart Buttons.
- Power On: Press and hold the power button for 3 seconds. The blue light will flash for 2 seconds.
- Power Off: Press and hold the power button for 3 seconds. The red light will stay on for 1 second. The earphones will also automatically shut down after 3 minutes of disconnecting the wireless connection.
- Wireless/MP3 Mode Switch: Triple-click the power button to switch between wireless (Bluetooth) mode and MP3 (internal memory) mode.
- Answer/End a Call: Short-press the power button once.
- Reject Incoming Calls: Press and hold the power button for 1 second.
- Launch Voice Assistant (Siri/Alexa/Google Assistant): Double-click the power button consecutively.
- Pause/Play: Short-press the power button once (works in both TF card mode and wireless mode).
- Increase Volume: Short-press the Volume + button.
- Decrease Volume: Short-press the Volume - button.
- Next Track: Press and hold the Volume + button for 2 seconds.
- Previous Track: Press and hold the Volume - button for 2 seconds.
- TF Card Mode Playback (Sequential/Shuffle): Quadruple-click the power button to switch between sequential playback and shuffle playback.
5.1. Using the Adjustable Elastic Strip
The included elastic strip can be used for two main functions:
- Adjust the elastic strip to fine-tune the size and fit of the earphones.
- When swimming, use the elastic strip as a fixed strap to prevent the earphones from falling off due to water flow impact.
6. Maintenance and Care
- Water Exposure: Do not soak the headphones in seawater or saltwater for extended periods. After use in water, especially saltwater, rinse the charging magnetic part with fresh water and wipe it dry.
- Long-Term Storage: If the earphones will not be used for a long time, charge them at least once a month to maintain battery health.
- Post-Exercise Cleaning: After each exercise session, wipe the surface of the headphones clean, paying special attention to the magnetic charging port. This prevents sweat and saltwater from corroding the charging port and extends the product's lifespan.
- Environmental Precautions: Keep the product away from fire, heat sources, freezing temperatures, and chemicals. Avoid violent impact, unauthorized disassembly, and extrusion of the product.
7. Troubleshooting
- Charging Issues:
- Ensure the magnetic charging cable is correctly aligned with the charging port. Magnetic charging has positive and negative poles; mutual adsorption indicates correct connection, while mutual repulsion means it cannot be charged and may cause a short circuit.
- Use a charging head with an output of 5V1A or less. Using a charger greater than 5V can cause the earphones to overheat and potentially damage the battery and motherboard.
- Low Battery Warning: A prompt tone will be played every 3 minutes when the battery is low. Recharge the earphones as soon as possible.
- Product Defect: If you discover any defects with the product, stop using it immediately and contact the seller for after-sales support. Do not attempt to disassemble any part of the product without permission.
- Bluetooth Disconnection: If the phone actively disconnects, the red and blue lights will flash alternately. Re-pair if necessary.
8. Specifications
| Attribute | Specification |
|---|---|
| Brand Name | POLVCDG |
| Model | X9 |
| Waterproof Level | IPX8 |
| Wireless Version | V6.0 |
| Internal Memory | 32GB |
| Battery Capacity | 220mAh |
| Battery Life | Up to 10 hours (at 60% volume) |
| Charging Duration | Approx. 2 hours (Magnetic fast charging) |
| Decoding Format Support | MP3, M4A, WAV, WMA, FLAC, AAC |
| Protocols | A2DP, AVRCP HFP |
| Effective Wireless Distance | 8-10 meters |
| Material | Metal, PC, PVC, ABS, Plastic, TPU, Silica Gel |
| Dimensions (Width x Depth x Height) | 110mm x 133mm x 50mm |
| Weight | 29g |
| Frequency Response Range | 20 - 20000Hz |
| Sensitivity | 54dB |
| Resistance | 54 Ω |
| Driver Diameter | 40mm |
| Impedance Range | Up to 32 Ω |
| Features | Waterproof, With microphone, Amazon Alexa Support, Apple Siri Support, Detachable Cable, Dual Connection, Playback Control, Google Assistant Support, Active Noise-Cancellation, Volume Control, Control Button, Voice assistant built-in, NFC Technology |
| Vocalism Principle | Bone Conduction |
| Category | Earphones & Headphones |
| Earcups Type | Semi-open |
| Number Of Drivers | 2 |
| Charging Method | Cable (Magnetic) |
| Headphone Pads Material | Silicone |
| Magnet Type | Other |
| Connectors | Airplane Adapter |
| Certification | CE, FCC, RoHS |

Product Parameters: Size diagram. Note: Parameters are measured manually; errors of 3-5mm may occur.

X9 Product Information: Basic, Battery, and Wireless Data.
9. User Tips
- For Swimming: Remember to switch to MP3 mode (triple-click power button) and ensure your desired music is loaded onto the 32GB internal memory before entering the water, as Bluetooth connectivity may be limited underwater. Use the elastic strip for a secure fit.
- Post-Workout Care: Always wipe down your earphones, especially the charging contacts, after any activity involving sweat or water to prevent corrosion and maintain optimal performance.
- Awareness in Sports: The open-ear design is a key safety feature. Enjoy your music while remaining aware of your surroundings, particularly when running or cycling outdoors.
10. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact the seller or the official POLVCDG customer service. Refer to your purchase documentation for specific warranty terms and contact information.