Introduction
Thank you for choosing the VOLT PLUS TECH Pro Earbuds Wireless V5.3 LED. These earbuds are designed to provide a superior audio experience with advanced features such as Bluetooth 5.3 connectivity, active noise cancellation, and a convenient LED display charging case. This manual will guide you through the setup, operation, and maintenance of your new earbuds.

Image: The VOLT PLUS TECH Pro Earbuds, showing both earbuds and the charging case with its digital LED display indicating battery levels for left earbud, case, and right earbud.
What's in the Box
Please check the package contents to ensure all items are present:
- Wireless Charging Case
- Pro Earbuds (Left and Right)
- USB-C Charging Cable
- User Manual (this document)
- Ear Cushions (3 sizes: S, M, L)
Setup
1. Initial Charging
Before first use, fully charge the earbuds and the charging case. The LED display on the case will show the charging status.
- Place both earbuds into the charging case.
- Connect the USB-C charging cable to the charging port on the case and to a power source.
- The LED display will show the battery percentage of the case and individual earbuds. A full charge typically takes about 2 hours.

Image: The charging case connected via a USB-C cable, illustrating the charging process and the digital LED display showing battery levels.
2. Pairing with Your Device
- Power On: Remove the earbuds from the charging case. They will automatically power on. A blue indicator light will confirm they are on. If they do not power on automatically, press and hold the touch area on each earbud for 3-5 seconds until the blue indicator light flashes.
- Bluetooth Activation: On your smartphone or device, go to the Bluetooth settings and ensure Bluetooth is turned on.
- Search and Connect: Search for available devices. You should see "YD03" in the list. Select "YD03" to pair.
- Confirmation: Once connected, the earbuds will provide a voice prompt stating "Connected".
The earbuds feature an "Inaural Separation Design," allowing them to be used in single or dual operation modes freely. They will automatically connect to each other when removed from the case.

Image: A diagram illustrating the master-slave switching capability, showing how either the left or right earbud can function as the main unit for single-ear use.
Operating Instructions
The VOLT PLUS TECH Pro Earbuds feature intuitive touch controls for easy management of your audio and calls.

Image: A visual guide to the touch controls on the earbuds, detailing actions for music playback, volume adjustment, call management, and voice assistant activation.
Touch Controls:
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Play/Pause | Short press 1 | Short press 1 |
| Previous Song | Double-click | N/A |
| Next Song | N/A | Double-click |
| Volume Down | Triple-click | N/A |
| Volume Up | N/A | Triple-click |
| Answer/End Call | Short press 1 | Short press 1 |
| Reject Call | Long press by 2 seconds | Long press by 2 seconds |
| Activate Voice Assistant (Siri/Google Assistant) | Long press by 1.5 seconds | Long press by 1.5 seconds |
| Game/Video/Music Mode Switch | Even touch switch under 4 | Even touch switch under 4 |
LED Digital Display:
The charging case features an intelligent digital LED display that clearly shows the accurate power level of the charging box and each earphone (L and R). This allows for better power management.

Image: A close-up of the charging case's LED display, highlighting the battery indicators for the left earbud, the case's main battery, and the right earbud.
Maintenance
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Water Resistance: The earbuds are IPX4 water and sweatproof, meaning they can withstand splashes and sweat. They are ideal for sports. Note: The charging case is NOT waterproof. Avoid exposing the charging case to water or excessive moisture.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged. Store in a cool, dry place away from extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the earbuds and case frequently. Charge them regularly.
Troubleshooting
| Problem | Solution |
|---|---|
| Earbuds not pairing with device. | Ensure earbuds are fully charged. Turn off and on Bluetooth on your device. Forget "YD03" from your device's Bluetooth list and re-pair. Ensure earbuds are removed from the case to enter pairing mode. |
| Only one earbud is working. | Place both earbuds back into the charging case, close the lid, wait a few seconds, then remove them simultaneously. This should re-sync them. Ensure both earbuds are charged. |
| Earbuds not charging. | Check if the charging cable is securely connected to both the case and the power source. Ensure the charging contacts on the earbuds and inside the case are clean and free of debris. Try a different USB-C cable or power adapter. |
| Low volume or poor sound quality. | Adjust the volume on both your device and the earbuds. Ensure the ear tips are properly sealed in your ear canal. Clean any earwax or debris from the earbud nozzles. |
| Earbuds disconnect frequently. | Ensure you are within the Bluetooth range (up to 33 feet/10 meters) of your device. Avoid obstacles that may interfere with the signal. Fully charge the earbuds and your device. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | YD03 |
| Bluetooth Version | 5.3 |
| Wireless Communication Technology | Bluetooth |
| Noise Control | Active Noise Cancellation, Passive Noise Cancellation, Sound Isolation |
| Microphones | Quad Microphones (2 per earbud) with CVC 8.1 Noise Reduction |
| Water Resistance Level | IPX4 (Earbuds only) |
| Battery Life (Earbuds) | 5+ hours per charge |
| Total Playtime with Charging Case | Up to 25+ hours |
| Charging Case Battery Capacity | 2000 mAh |
| Charging Time | Approx. 2 hours (Earbuds & Case) |
| Connectivity Technology | USB-C (for charging case) |
| Control Method | Touch |
| Compatible Devices | Android, iOS, Mac, Windows, itel P55+ |
| Item Weight | 4 Ounces |
| Product Dimensions | 1.5 x 1 x 1.5 inches |
| Bluetooth Range | 33 Feet (10 meters) |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 26 Millimeters |
| Sensitivity | 103 dB |
| Impedance | 25.94 Ohm |
Warranty and Support
For warranty information and customer support, please refer to the contact details provided with your purchase or visit the official VOLT PLUS TECH website. Keep your proof of purchase for warranty claims.
If you encounter any issues not covered in this manual, please contact our customer support team for assistance.





