1. Product Overview
The YD03 True Wireless Earbuds offer a seamless audio experience with Bluetooth 5.3 connectivity, touch controls, and a portable LED charging case. Enjoy high-fidelity sound and extended playtime for music, calls, and more.

Image: YD03 True Wireless Earbuds with their LED digital display charging case.
2. Setup
2.1 Unboxing and Initial Charge
Before first use, ensure all components are present and fully charge the earbuds and charging case.
- Open the package and verify contents: YD03 Earbuds (L/R), Charging Case, USB Charging Cable, User Manual, and various ear tip sizes.
- Place both earbuds into the charging case.
- Connect the charging case to a power source using the provided Micro-USB cable. The LED digital display on the case will show the battery percentage for the case and individual earbuds (L and R).

Image: The YD03 charging case connected via Micro-USB, demonstrating its power bank functionality for a smartphone.
2.2 Pairing with Your Device
- Ensure the earbuds are charged and removed from the charging case. They will automatically enter pairing mode.
- On your smartphone or Bluetooth-enabled device, go to Bluetooth settings.
- Search for available devices and select "YD03" from the list.
- Once connected, a voice prompt will confirm successful pairing.
- The earbuds will automatically reconnect to the last paired device when removed from the case, if Bluetooth is enabled on the device.

Image: Diagram illustrating the pairing process, showing the left and right earbuds connecting to a smartphone via Bluetooth.
3. Operating Instructions
3.1 Wearing the Earbuds
Select the ear tips that provide the most comfortable and secure fit for optimal sound quality and stability.

Image: A person wearing the YD03 earbuds, demonstrating their in-ear fit.
3.2 Touch Controls
The YD03 earbuds feature smart touch controls for easy management of audio and calls.

Image: Close-up of an earbud highlighting the smart touch control area with a fingerprint icon.
| Function | Action |
|---|---|
| Play/Pause | Single tap on either earbud |
| Next Track | Double tap on the Right earbud |
| Previous Track | Double tap on the Left earbud |
| Answer/End Call | Single tap on either earbud |
| Reject Call | Long press on either earbud |
| Volume Up | Triple tap on the Right earbud |
| Volume Down | Triple tap on the Left earbud |
| Activate Voice Assistant | Long press for 2 seconds on either earbud (when not on a call) |
3.3 Power On/Off
- Power On: The earbuds automatically power on when removed from the charging case. Alternatively, long press the touch area for a few seconds.
- Power Off: Place the earbuds back into the charging case to automatically power off and begin charging. Alternatively, long press the touch area for several seconds until you hear a power-off prompt.
4. Maintenance
4.1 Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Do not use abrasive cleaners or solvents.
4.2 Storage
- When not in use, always store the earbuds in their charging case to protect them and ensure they remain charged.
- Store in a cool, dry place away from extreme temperatures.
4.3 Water Resistance
The YD03 earbuds are rated IPX7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. This makes them suitable for workouts and light rain. However, they are not recommended for swimming or prolonged water exposure. The charging case is not waterproof.
5. Troubleshooting
- Earbuds not pairing: Ensure both earbuds are charged. Place them back in the case, then remove them. Turn off and on your device's Bluetooth, then try pairing again.
- Only one earbud working: Try re-pairing both earbuds. Ensure both earbuds have sufficient charge.
- Charging case not charging: Check the Micro-USB cable and power adapter. Ensure the connection is secure.
- Low volume: Adjust the volume on both your connected device and using the earbud touch controls (triple tap left for volume down, triple tap right for volume up).
- Earbuds falling out: Experiment with the different sizes of ear tips provided to find the best fit for your ears.
6. Specifications
| Feature | Specification |
|---|---|
| Model | YD03 |
| Bluetooth Version | 5.3 |
| Communication | Wireless |
| Control Type | Touch Control, Control Button |
| Volume Control | Yes |
| Vocalism Principle | Other (HiFi panoramic sound) |
| Material | Plastic |
| Waterproof Rating | IPX7 (earbuds only) |
| Charging Port | Micro-USB |
| Charging Case Functionality | LED Digital Display, Power Bank (for emergency charging of other devices) |
| Charging Case Dimensions | 7.98 cm (3.14 in) L x 5.49 cm (2.16 in) W x 3.0 cm (1.18 in) H |
| Origin | Mainland China |

Image: Technical drawing showing the dimensions of the YD03 charging case and earbuds.
Video: A short demonstration of the YD03 earbuds, highlighting the LED display, charging, and touch controls.
7. User Tips
- Optimal Fit: The package includes various ear tip sizes. Experiment to find the best fit for your ears. A good seal enhances sound quality and bass response.
- Battery Life: The charging case provides significant extended playtime. While the earbuds themselves offer several hours of listening, the case can recharge them multiple times. The product information indicates a total life of up to 250 hours, which typically refers to standby time or total listening time including case recharges. Actual music playback time per charge will be less.
- Universal Compatibility: These earbuds use standard Bluetooth technology and are compatible with any Bluetooth-enabled device, including iPhones, Android phones, tablets, and computers.
8. Warranty and Support
For any issues or questions regarding your YD03 True Wireless Earbuds, please contact the seller or retailer from whom you purchased the product. They can provide assistance with troubleshooting, warranty claims, and product support.




