Introduction
Thank you for choosing the MONODEAL Swimming Headphones S800. These bone conduction headphones are designed for active lifestyles, offering IP68 waterproof protection, an integrated MP3 player, and Bluetooth 5.3 connectivity. The open-ear design ensures comfort and situational awareness, making them ideal for swimming, running, cycling, and other sports. This manual provides essential information for proper setup, operation, and maintenance of your device.
Package Contents
Please check the box for the following items:
- 1 x MONODEAL Bone Conduction Headset
- 1 x Pair of Earplugs
- 1 x Charging Cable
- 1 x User Manual
Product Overview
The MONODEAL S800 headphones feature an ergonomic design with easily accessible controls.

Image: MONODEAL S800 Bone Conduction Headphones highlighting key features like 8GB MP3, Bluetooth 5.3, IP68 Waterproof, 8 Hours Play Time, 180mAh Battery, 2H Charging Time, DC 5V Charging Voltage, and 33 Feet Connection range.

Image: Close-up view of the control panel on the MONODEAL S800 headphones, showing the power/mode button and volume controls.
Controls:
- Power/Mode Button: Press and hold to power on/off. Double-press to switch between Bluetooth and MP3 modes.
- Volume Up (+): Increase volume. Press and hold for next track in MP3 mode.
- Volume Down (-): Decrease volume. Press and hold for previous track in MP3 mode.
- Multi-function Button (often combined with Power): Play/Pause, Answer/End calls.
Setup
1. Charging the Headphones
Before first use, fully charge your headphones. Use the provided magnetic charging cable.
- Connect the magnetic end of the charging cable to the charging port on the headphones.
- Connect the USB end of the cable to a 5V USB power adapter or a computer's USB port.
- The LED indicator will show charging status (e.g., red for charging, blue for fully charged).
- A full charge typically takes approximately 2 hours.

Image: Close-up of the MONODEAL S800 headphones connected to their magnetic charging cable, showing the charging port and cable connection.
2. Power On/Off
- To Power On: Press and hold the Power/Mode button for 3 seconds until the LED indicator flashes and you hear a power-on prompt.
- To Power Off: Press and hold the Power/Mode button for 3 seconds until the LED indicator turns off and you hear a power-off prompt.
3. Bluetooth Pairing
To connect your headphones to a Bluetooth-enabled device (smartphone, tablet, laptop):
- Ensure the headphones are powered off.
- Press and hold the Power/Mode button for 5-7 seconds until the LED indicator flashes red and blue alternately, indicating pairing mode.
- On your device, enable Bluetooth and search for available devices.
- Select "MONODEAL S800" (or similar name) from the list.
- Once connected, the LED indicator will flash blue slowly, and you will hear a connection confirmation.
Operating
1. Switching Between Bluetooth and MP3 Modes
The headphones support both Bluetooth streaming and an integrated MP3 player with 32GB of storage.
- To switch modes: Double-press the Power/Mode button. A voice prompt will confirm the current mode (e.g., "Bluetooth Mode" or "MP3 Mode").

Image: A visual comparison of MP3 Mode and Bluetooth Mode. MP3 Mode highlights 32GB large storage and faster file transfer. Bluetooth Mode emphasizes audio from up to 2 devices and clear phone calls, with illustrations of a phone and laptop connected.
2. Using MP3 Mode (Internal Storage)
The S800 headphones have 32GB of internal memory for storing music files. This mode is essential for underwater use as Bluetooth signals do not transmit effectively through water.
- Transferring Music: Connect the headphones to your computer using the charging cable. The headphones will appear as a removable disk. Drag and drop your music files (FLAC, WMA, AAC, WAV, APE, M4A formats supported) into the headphone's storage.
- Playing Music: Switch to MP3 mode. The headphones will automatically play music from the internal storage.
- Track Navigation: Press and hold the Volume Up (+) button for the next track. Press and hold the Volume Down (-) button for the previous track.
3. Using Bluetooth Mode
- Ensure the headphones are paired with your device.
- Switch to Bluetooth mode.
- Play audio from your connected device. The headphones support Bluetooth 5.3 for stable and fast connections.
- Multi-point Connection: The headphones can connect to two devices simultaneously. To switch between devices, pause playback on the first device and start playback on the second.
4. Call Management
- Answer/End Call: Press the Multi-function button once.
- Reject Call: Press and hold the Multi-function button for 2 seconds.
5. Swimming Use
The MONODEAL S800 headphones are IP68 waterproof, suitable for swimming.
- Important: Always use the MP3 Mode when swimming. Bluetooth signals cannot transmit effectively underwater.
- For optimal sound quality and comfort, use the included earplugs while swimming.

Image: A person wearing the MONODEAL S800 bone conduction headphones and swimming goggles, demonstrating their use during swimming activities.
Maintenance
1. Cleaning
- After swimming or heavy sweating, rinse the headphones with fresh water.
- Wipe the headphones dry with a soft, clean cloth.
- Ensure the charging port is dry before charging to prevent corrosion.
2. Storage
- Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid placing heavy objects on the headphones.
3. Battery Care
- Charge the headphones regularly, even if not in use, to maintain battery health.
- Avoid completely draining the battery frequently.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| No sound. | Volume too low; not connected; wrong mode. | Increase volume; ensure proper Bluetooth connection or switch to MP3 mode; check audio source. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (flashing red/blue); enable Bluetooth on device; move closer to device (within 10m/33ft). |
| Music transfer to MP3 fails. | Incorrect file format; connection issue. | Ensure music files are in supported formats (FLAC, WMA, AAC, WAV, APE, M4A); check USB cable connection. |
| No sound underwater. | Using Bluetooth mode underwater. | Switch to MP3 mode for underwater use. Bluetooth does not work in water. |
Specifications
| Feature | Detail |
|---|---|
| Brand | MONODEAL |
| Model Name | Swimming Headphones S800 |
| Form Factor | Bone Conduction, Open-Ear |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Bluetooth Version | 5.3 |
| Water Resistance Level | IP68 (Waterproof) |
| Internal Memory | 32GB |
| Supported Audio Formats | FLAC, WMA, AAC, WAV, APE, M4A |
| Battery Life | 8-10 hours (depending on usage) |
| Charging Time | Approx. 2 hours |
| Frequency Range | 20 Hz - 20,000 Hz |
| Control Method | Push Button |
| Compatible Devices | Laptop, Smartphones, Smartwatch, Tablet |
| Material | Silicone (internal) |
| Special Features | Adjustable Headband, Built-in Microphone |
Warranty and Support
MONODEAL products are designed and manufactured to the highest quality standards. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship from the date of purchase. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact your retailer or visit the official MONODEAL website for customer service contact information. Keep your proof of purchase for warranty validation.