1. Introduction
Thank you for choosing the KOPIDOE X7 Bone Conduction Swimming Headphones. These headphones are designed to provide a unique audio experience for various sports activities, including swimming, running, and cycling. Featuring IPX8 waterproofing, an integrated MP3 player with 32GB storage, and Bluetooth 5.4 connectivity, the X7 allows for open-ear listening, ensuring both sound quality and environmental awareness.
Please read this manual thoroughly before using the product to ensure proper operation and to maximize its lifespan.
2. Product Overview
2.1 Package Contents
- KOPIDOE X7 Bone Conduction Swimming Headphones
- Magnetic Charging Cable
- Swimming Earplugs
- User Manual

Image 2.1: KOPIDOE X7 Bone Conduction Swimming Headphones with magnetic charging cable and earplugs.
2.2 Key Features
- Bone Conduction Technology: Delivers audio through your cheekbones, leaving your ears open to ambient sounds.
- IPX8 Waterproof Rating: Fully submersible, suitable for swimming and water sports.
- Built-in 32GB MP3 Player: Store up to approximately 9000 songs for phone-free listening, especially useful underwater.
- Bluetooth 5.4 Connectivity: Stable wireless connection for streaming audio from compatible devices.
- Open-Ear Design: Ensures comfort and situational awareness during activities.
- Long Battery Life: Up to 8 hours of playback on a single charge.

Image 2.2: The KOPIDOE X7 headphones offer open-ear comfort and are suitable for various sports, featuring IPX8 waterproofing, 32GB memory, Bluetooth 5.4, and long battery life.

Image 2.3: Exploded view illustrating the bone conduction driver technology within the headphones, which transmits sound through vibrations.
3. Setup
3.1 Charging the Headphones
- Connect the magnetic charging cable to the charging port on the headphones.
- Connect the USB end of the cable to a standard USB power adapter (not included) or a computer USB port.
- The LED indicator will show charging status. A full charge typically takes approximately 2 hours.
- Once fully charged, the LED indicator will change (refer to LED indicator section for details) and the headphones will provide up to 8 hours of playback time.

Image 3.1: The headphones feature a 200mAh battery, offering 8 hours of play time after 2 hours of fast charging.
3.2 Power On/Off
- To Power On: Press and hold the Power button for 3-5 seconds until the LED indicator lights up and you hear a power-on prompt.
- To Power Off: Press and hold the Power button for 3-5 seconds until the LED indicator turns off and you hear a power-off prompt.
3.3 MP3 Mode (Internal Storage)
The headphones have 32GB of internal storage for music playback without a connected device. This mode is recommended for swimming as Bluetooth signals do not transmit effectively underwater.
- To Load Music: Connect the headphones to your computer using the magnetic charging cable. The computer will recognize the headphones as a removable disk. Drag and drop your audio files (e.g., MP3, WAV) into the headphones' storage folder.
- To Switch to MP3 Mode: While the headphones are on, press the Mode button (often combined with the Power button or a dedicated button, refer to Section 4.1 for specific controls) to switch to MP3 mode.

Image 3.2: The headphones support both a built-in 32GB MP3 player for storing up to 9000 songs and Bluetooth 5.4 for wireless streaming and calls.

Image 3.3: The headphones feature 32GB of internal storage for music files.
3.4 Bluetooth Mode
- Pairing: With the headphones powered on, they will automatically enter pairing mode (indicated by a flashing LED).
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for "KOPIDOE X7" in the list of available devices.
- Select "KOPIDOE X7" to connect. Once connected, the LED indicator will stop flashing, and you will hear a connection prompt.
- The headphones can connect to up to two devices simultaneously.

Image 3.4: The headphones can be wirelessly connected to devices like smartphones and laptops via Bluetooth.
4. Operating Instructions
4.1 Button Functions

Image 4.1: Overview of headphone control buttons and their corresponding actions.
- Power Button (often combined with Play/Pause/Call):
- Press and hold for 3-5s: Power On/Off
- Click once: Music Play/Pause, Answer/Hang up call
- Press and hold for 2s (incoming call): Reject a call
- Volume Up (+) Button:
- Click once: Volume Up
- Press and hold for 2s: Next Song
- Volume Down (-) Button:
- Click once: Volume Down
- Press and hold for 2s: Previous Song
- Mode Button (if separate, or combined with Power/Volume): Click once to switch between Bluetooth Mode and MP3 Mode.
4.2 Music Playback
- In Bluetooth mode, control playback from your connected device.
- In MP3 mode, use the headphone buttons to control playback.
4.3 Making and Receiving Calls
- Ensure headphones are in Bluetooth mode and connected to your smartphone.
- Answer Call: Click the Power/Play/Pause button once.
- End Call: Click the Power/Play/Pause button once during a call.
- Reject Call: Press and hold the Power/Play/Pause button for 2 seconds when an incoming call is received.
4.4 Usage Scenarios

Image 4.2: The KOPIDOE X7 headphones are suitable for various activities including swimming, surfing, running, and cycling.

Image 4.3: The IPX8 waterproof rating makes these headphones ideal for swimming. Note: Bluetooth signals do not transmit underwater; switch to MP3 mode for underwater listening.
5. 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.
- Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not in use for extended periods.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are on and in pairing mode. Turn on device Bluetooth. Move closer to the device (within 10 meters). |
| No sound or distorted sound underwater. | Attempting to use Bluetooth underwater. | Bluetooth signals do not transmit through water. Switch to MP3 mode for underwater listening. |
| Music not playing sequentially in MP3 mode. | Playback mode set to shuffle. | Check if there is a shuffle/repeat function. If not, the device may play in a specific order. |
| Poor call quality. | Weak Bluetooth connection; environmental noise. | Move closer to the connected device. Reduce background noise. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | X7 |
| Brand | KOPIDOE |
| Water Resistance Level | IPX8 Waterproof |
| Audio Driver Type | Bone Conduction Driver |
| Bluetooth Version | 5.4 |
| Bluetooth Range | 10 Meters |
| Internal Storage | 32GB (MP3 Player) |
| Battery Life | Up to 8 Hours |
| Charging Time | Approximately 2 Hours |
| Frequency Range | 20 Hz - 20,000 Hz |
| Earpiece Shape | Open-Ear |
| Item Weight | 0.02 Kilograms (0.634 ounces) |
| Compatible Devices | Smartphones, Tablets, Laptops, Smart Speakers |
| UPC | 768383729177 |
8. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or contact the retailer where the product was acquired. You may also visit the official KOPIDOE website for further assistance.