Introduction
Thank you for choosing the MONODEAL Bone Conduction Headphones S800. These headphones are designed to provide a unique audio experience through bone conduction technology, allowing you to enjoy music while remaining aware of your surroundings. With IP68 waterproofing and an integrated 32GB MP3 player, they are ideal for various activities, including swimming and outdoor sports. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your device.
Product Features
- IP68 Waterproof Rating: Fully submersible, suitable for swimming and water sports.
- Bone Conduction Technology: Delivers clear sound directly to the inner ear through the skull, keeping ear canals open for situational awareness and comfort.
- Integrated 32GB MP3 Player: Store over 8,000 songs directly on the headphones for use without a connected device, especially useful for underwater activities where Bluetooth signals are limited.
- Bluetooth 5.3 Connectivity: Stable and low-latency wireless connection for high-quality stereo audio.
- Adjustable Fit: Designed to fit securely during intense activities, with an included adjustment cable for personalized comfort. Made with high-strength titanium memory alloy for durability and flexibility.
- Long Battery Life: Up to 8 hours of playback per charge.
- Magnetic Quick Charge: Convenient and fast charging.

Image: Overview of MONODEAL S800 key features including 32GB MP3, Bluetooth 5.3, IP68 waterproof rating, 8 hours play time, 33 feet connection range, 180mAh battery, 2 hours charging time, and DC 5V charging voltage.
Setup
1. Charging the Headphones
Before first use, fully charge your headphones. Connect the magnetic charging cable to the charging port on the headphones and a USB power source (DC 5V). The charging indicator will show the charging status. A full charge typically takes approximately 2 hours and provides up to 8 hours of playback.

Image: Magnetic quick charge connection point on the MONODEAL S800 headphones, highlighting the 180mAh battery and 8 hours of battery life per use.
2. Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the power button until the indicator light flashes red and blue, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "MONODEAL S800" from the list of found devices.
- Once connected, the indicator light will turn solid blue or flash slowly.
3. MP3 Mode (Internal Storage)
The headphones feature 32GB of internal memory for storing music files. This mode is essential for underwater use as Bluetooth signals do not transmit effectively in water.
- Transferring Music: Connect the headphones to your computer using the provided USB charging cable. The headphones will appear as a removable disk. Drag and drop your MP3 audio files into the headphone's storage folder.
- Switching to MP3 Mode: After disconnecting from the computer, power on the headphones. Press the Mode button (refer to controls section) to switch between Bluetooth and MP3 modes. A voice prompt will confirm the current mode.

Image: Diagram illustrating the two operational modes: MP3 Mode with 32GB large storage and Bluetooth Mode with Bluetooth 5.3 for stable connections to devices.
Operating Instructions
Controls
The headphones feature intuitive buttons for controlling playback, volume, and calls. Specific button functions may vary slightly, but generally include:
- Power Button: Press and hold to power on/off. Short press for play/pause.
- Volume Up (+): Short press to increase volume. Long press for next track.
- Volume Down (-): Short press to decrease volume. Long press for previous track.
- Mode Button: Short press to switch between Bluetooth and MP3 modes.
- Call Button (if integrated): Short press to answer/end calls. Long press to reject calls.
Using for Swimming
When swimming, it is crucial to use the MP3 mode. Bluetooth signals cannot effectively transmit through water. Ensure your desired music is loaded onto the 32GB internal memory before entering the water. The IP68 rating ensures the headphones are fully protected against water immersion.

Image: A person wearing the MONODEAL S800 headphones while swimming, demonstrating the IP68 waterproof rating for use in water.
Adjusting the Fit
The headphones are designed for a secure fit. An adjustable cable or strap is included to further customize the fit around your head, ensuring stability during vigorous activities like running, cycling, or swimming. The titanium memory alloy frame provides flexibility and maintains its shape.

Image: A cyclist wearing the MONODEAL S800 open bone conduction headphones, illustrating their secure fit during strenuous workouts.
Maintenance
- Cleaning: After use, especially after swimming, rinse the headphones with fresh water and wipe them dry with a soft cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Charging Port: Ensure the magnetic charging contacts are clean and dry before charging to prevent corrosion.
- Avoid Impact: While durable, avoid dropping or subjecting the headphones to strong impacts.
Troubleshooting
| Problem | Solution |
|---|---|
| Headphones do not power on. | Ensure the headphones are fully charged. Connect to a power source and check the charging indicator. |
| Cannot pair via Bluetooth. | Ensure the headphones are in pairing mode (flashing red and blue). Turn off and on your device's Bluetooth. Move closer to the device. |
| No sound in MP3 mode. | Verify that music files are correctly loaded onto the internal 32GB memory. Ensure the headphones are switched to MP3 mode. Check volume levels. |
| Sound quality is poor. | Ensure the headphones are positioned correctly on your cheekbones. For Bluetooth mode, ensure you are within range of your device. For swimming, use the provided earplugs to enhance sound clarity. |
| Headphones not recognized by computer. | Try a different USB port or cable. Ensure the headphones are powered on when connecting to the computer. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | Bone Conduction Headphones S800 |
| Brand | MONODEAL |
| Waterproof Rating | IP68 |
| Bluetooth Version | 5.3 |
| Internal Storage | 32GB MP3 Player |
| Battery Capacity | 180mAh |
| Play Time | Up to 8 hours |
| Charging Time | Approximately 2 hours |
| Charging Voltage | DC 5V |
| Connectivity Technology | Wireless |
| Material | Titanium Alloy |
| Recommended Use | Swimming, Sports, Outdoor Activities |
Safety Information
- Do not attempt to disassemble or modify the headphones. This may cause damage and void the warranty.
- Keep the headphones away from extreme temperatures, humidity, and corrosive substances.
- Avoid listening at excessively high volumes for prolonged periods to prevent hearing damage.
- When using the headphones outdoors, especially while cycling or driving, maintain awareness of your surroundings. Bone conduction technology allows for this, but caution is always advised.
- Ensure the charging port is dry before connecting the charging cable.
Warranty and Support
Specific warranty details for the MONODEAL Bone Conduction Headphones S800 are not provided in this manual. Please refer to the warranty card included with your product or contact MONODEAL customer support for further assistance. For technical support or inquiries, please visit the official MONODEAL website or contact their customer service channels.