Introduction
Thank you for choosing the On'ePlus Nord Buds 2r True Wireless Earbuds. This manual provides detailed instructions on how to set up, operate, and maintain your earbuds to ensure optimal performance and longevity. The Nord Buds 2r feature 12.4mm drivers for enhanced audio, IP55 water and sweat resistance, and up to 38 hours of playback with the charging case.
Safety Information
FOR EXTERNAL USE ONLY. To prevent hearing damage, do not listen at high volume levels for long periods. Do not use the earbuds in situations where the inability to hear ambient sounds may be dangerous, such as while driving or cycling. Keep out of reach of children. Avoid extreme temperatures and direct sunlight. Do not disassemble or modify the product.
What's in the Box
- On'ePlus Nord Buds 2r True Wireless Earbuds (Left and Right)
- Charging Case
- Protective Case
- USB Charging Cable (not explicitly listed but standard)
- Eartips (various sizes, not explicitly listed but standard)
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. Place the earbuds into the charging case. Connect the charging case to a power source using a USB cable. The indicator light on the case will show charging status.

Image: The Nord Buds 2r earbuds resting in their open charging case, displaying a green LED indicator light, signifying charging or full charge.
2. Pairing with Your Device
- Ensure the earbuds are in the charging case and the case lid is open.
- On your smartphone or audio device, enable Bluetooth.
- Select "On'ePlus Nord Buds 2r" from the list of available Bluetooth devices.
- Once connected, the earbuds are ready for use.
3. Wearing the Earbuds
Gently insert the earbuds into your ears, ensuring a snug and comfortable fit. The rounded tips are designed for in-ear placement. Adjust them until the sound is clear and the fit is secure.


Image: Two views of the Nord Buds 2r earbuds, one showing a single earbud's side profile for fit, and another showing both earbuds outside the case.
Operating Instructions
Touch Controls
The earbuds feature touch-sensitive areas for media control. Specific gestures (e.g., single tap, double tap, long press) can be configured via the companion app.

Image: Front view of the Nord Buds 2r earbuds, illustrating the design and potential touch control areas.
Sound Master Equalizer
Utilize the Sound Master Equalizer through the Hey Melody App to customize your audio experience. Choose from three unique audio profiles: Bold, Bass, and Balanced, to suit your preference.
Gaming Features
The earbuds allow access to various features while playing supported games on a handset. These features can be toggled and adjusted at any time during gameplay for an enhanced gaming experience.
Call Handling
The built-in microphone enables clear voice calls. Use the touch controls to answer, end, or reject calls.
Maintenance
Cleaning
Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials. Ensure the charging contacts are free of debris.
Water and Sweat Resistance (IP55)
The earbuds have an IP55 rating, meaning they are protected against dust ingress and low-pressure water jets from any direction. This makes them suitable for workouts and light rain. However, they are not designed for submersion in water. Dry the earbuds completely before placing them back in the charging case.
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 direct sunlight.
Troubleshooting
Earbuds not pairing:
- Ensure earbuds are charged.
- Turn off and on Bluetooth on your device.
- Try forgetting the device in your Bluetooth settings and re-pairing.
No sound or low volume:
- Check the volume level on both the earbuds and your connected device.
- Ensure earbuds are properly seated in your ears.
- Clean any debris from the earbud nozzles.
Charging issues:
- Ensure the charging cable is securely connected.
- Check if the charging port on the case is clean.
- Try a different charging cable or power adapter.
Specifications
| Feature | Description |
|---|---|
| Model Name | E510a |
| Connectivity Technology | Wireless (Bluetooth) |
| Audio Driver Size | 12.4 mm |
| Battery Life | Up to 38 hours (with charging case) |
| Water Resistance Level | IP55 (Water Resistant) |
| Noise Control | Sound Isolation |
| Frequency Range | 20 Hz - 20,000 Hz |
| Impedance | 80 Ohm |
| Control Method | App, Media Control |
| Compatible Devices | Android Devices, Dolby Atmos Supporting Devices |
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official On'ePlus support website. Keep your proof of purchase for any warranty claims.