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

Image: The VOLT PLUS TECH Pro Earbuds, black in color, are shown alongside their sleek black charging case. The charging case features a prominent green LED digital display indicating battery levels for both the case and individual earbuds.
Package Contents
Please ensure all items are present in your package:
- VOLT PLUS TECH Pro Earbuds (Left and Right)
- Portable Charging Case with Digital LED Display
- USB-C Charging Cable
- User Manual
- Ear Tips (Small, Medium, Large)
Setup Guide
Initial Charging
Before first use, fully charge the earbuds and the charging case. The charging case features a digital LED display that shows the battery percentage for the case and individual earbuds (L for left, R for right).
- Connect the provided USB-C cable to the charging port on the case and to a USB power source.
- The LED display will illuminate, showing the charging status.
- Once fully charged, the display will show 100%.

Image: A close-up of the black earbud charging case with its green LED display showing battery levels. A USB-C cable is plugged into the charging port at the bottom, indicating the charging process.
Powering On/Off
- Automatic Power On: Remove the earbuds from the charging case. They will automatically power on, and a blue indicator light will confirm.
- Manual Power On: If the earbuds do not power on automatically, press and hold the touch area on each earbud for 3-5 seconds until the blue indicator light flashes.
- Power Off: Place the earbuds back into the charging case. They will automatically power off and begin charging.
Bluetooth Pairing
- Ensure the earbuds are powered on and out of the charging case. They will enter pairing mode automatically.
- On your device (smartphone, tablet, etc.), go to the Bluetooth settings and turn Bluetooth on.
- Search for available devices. Select "YD03" from the list.
- Once connected, the earbuds will provide a voice prompt stating "Connected".
- The earbuds support "Inaural Separation Design," allowing them to be used individually (single earbud mode) or together (dual earbud mode).

Image: A diagram illustrating the "Master-slave switch" functionality, showing how either the left or right earbud can act as the main connection, allowing for single or dual earbud use. The earbuds are shown inside their open charging case.
Operating Instructions
Touch Controls
The VOLT PLUS TECH Pro Earbuds feature intuitive touch controls on each earbud. Refer to the diagram below for specific functions:

Image: A visual guide to the touch controls on the earbuds. It shows the left earbud's functions (double-click for previous song, three strikes for volume down) and the right earbud's functions (double-click for next song, three strikes for volume up). Common functions like play/pause (short press), answer/reject calls (short/long press), and activating voice assistant (long press 1.5 seconds) are also depicted.
- Play/Pause: Short press either earbud once.
- Previous Song: Double-click the left earbud.
- Next Song: Double-click the right earbud.
- Volume Down: Triple-click the left earbud.
- Volume Up: Triple-click the right earbud.
- Answer/End Call: Short press either earbud once.
- Reject Call: Press and hold either earbud for 1.5 seconds.
- Activate Voice Assistant (e.g., Siri): Press and hold either earbud for 1.5 seconds (after rejecting a call or during standby).
- Game/Video/Music Mode: Touch the switch under 4 (referring to the touch sensor area) to cycle through modes.
Noise Cancellation
The earbuds feature CVC 8.1 intelligent noise reduction technology with quad microphones (two per earbud) to reduce ambient noise by up to 30 dB, ensuring clear calls and immersive audio.
Maintenance
Cleaning
Regular cleaning helps maintain optimal performance and hygiene:
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner.
- Do not use harsh chemicals or abrasive materials.
- Ensure the charging contacts on both the earbuds and the case are clean and free of debris.
Water Resistance
The earbuds are IPX3 water-resistant, meaning they are protected against spraying water. This makes them suitable for light rain, sweat during workouts, etc. Important: The charging case is NOT waterproof. Avoid exposing the charging case to water or excessive moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds not powering on. | Low battery; not removed from case correctly. | Charge the earbuds and case. Ensure earbuds are fully removed from the case. Manually power on by pressing the touch area for 3-5 seconds. |
| Cannot pair with device. | Earbuds not in pairing mode; Bluetooth off on device; too far from device. | Ensure earbuds are out of case and indicator light is flashing. Turn Bluetooth off and on again on your device. Move earbuds closer to your device. Forget "YD03" from your device's Bluetooth list and re-pair. |
| No sound or low volume. | Volume too low on device/earbuds; earbuds not properly connected. | Increase volume on both your device and the earbuds using touch controls. Reconnect the earbuds to your device. Check if ear tips are properly sealed in your ear. |
| Charging case LED not working. | Charging cable issue; case fully charged. | Try a different USB-C cable and power adapter. If the case is fully charged, the display may turn off to save power. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | YD03 |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Headphones Jack | USB-C (for charging case) |
| Noise Control | Active Noise Cancellation (CVC 8.1) |
| Battery Life (Total) | Up to 25+ Hours (with charging case) |
| Water Resistance | IPX3 (Earbuds only) |
| Control Method | Touch |
| Material | Stainless Steel, Titanium, ABS, Hi-Impact Plastic |
| Product Dimensions | 1.5 x 1 x 1.5 inches |
| Item Weight | 4 Ounces |
| Manufacturer | VOLT PLUS TECH |
| Color | Black |
| Frequency Response | 48000 KHz |

Image: An infographic highlighting key features of the earbuds, including Game/video/music modes, Chip 5.3 Updated version, Type-C Quick charge interface, Intelligent three true digital display screen, HiFi Stereo sound, Earphone Smart noise reduction, Emergency charging treasure function, Double host single and double ear random switching, and Carving breathing lamp light effect.
Warranty and Support
For warranty information and technical support, please contact VOLT PLUS TECH directly through their official channels or the retailer from whom you purchased the product. Please retain your proof of purchase for warranty claims.
For further assistance, you may visit the product page on Amazon: Amazon Product Page





