1. Introduction
Thank you for choosing the Redmi A520 Wireless Bluetooth Ear-Hook Headphones. These headphones are designed to provide a high-fidelity audio experience with a secure and comfortable fit, ideal for sports, gaming, and daily use. This manual will guide you through the setup, operation, maintenance, and troubleshooting of your new headphones.
Package Contents:
- Redmi A520 Wireless Bluetooth Ear-Hook Headphones
- Charging Case
- Charging Cable (USB Type-C)
- User Manual
2. Product Overview
The Redmi A520 headphones feature an OWS (Open-Wear Stereo) ear-hook design, ensuring a secure fit without fully blocking the ear canal, allowing for environmental awareness. They are equipped with Bluetooth 5.3 for stable, low-latency connections, and boast 9D Stereoscopic High-Fidelity Sound Effect.


3. Setup Instructions
3.1 Charging the Headphones and Case
- Place the headphones into the charging case.
- Connect the USB Type-C charging cable to the charging port on the case and to a power source.
- The digital display on the charging case will show the battery level. Ensure both headphones and case are fully charged before first use.
The headphones offer up to 10 hours of continuous listening, with the charging case providing an additional 2 full charges, totaling up to 30 hours of use.
3.2 Pairing with a Device
- Open the charging case. The headphones will automatically turn on and enter pairing mode (indicated by a flashing light on the earbuds).
- On your device (smartphone, tablet, etc.), go to Bluetooth settings.
- Search for available devices and select "Redmi A520" from the list.
- Once connected, a voice prompt will confirm successful pairing.
The headphones feature dual hosts and dual channels, allowing for seamless switching between single and double earbud modes without interruption. They will automatically turn on and reconnect to the last paired device when taken out of the case.
3.3 Wearing the Headphones
The A520 headphones feature an ear-hook design for a secure and comfortable fit, especially during physical activity. The semi-ear-inserted listening method allows for real-time perception of environmental sounds, enhancing safety during outdoor activities.

4. Operating Instructions
4.1 Basic Controls
The headphones are equipped with control buttons for easy management of audio and calls. Specific touch/button functions are typically detailed in the quick start guide included in the package. Common functions include:
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Volume Control: Specific gestures or multiple taps (refer to quick start guide for exact commands).
- Answer/End Call: Single tap on either earbud.
- Reject Call: Press and hold on either earbud.
- Activate Voice Assistant: Triple tap on either earbud.
4.2 Call Management
The built-in microphone allows for hands-free calls. The headphones automatically switch to mono mode during calls for a more natural conversation experience.
4.3 Gaming Mode (Low Latency)
Leveraging Bluetooth 5.3, the A520 headphones offer a low-latency experience, synchronizing audio and video for smooth communication and enhanced gaming performance.

4.4 Active Noise-Cancellation
The headphones feature Active Noise-Cancellation to reduce ambient noise, allowing for a more immersive listening experience.
4.5 Sound Leakage Prevention
The directional sound wave transmission technology effectively reduces sound leakage, protecting your privacy and minimizing disturbance to those around you.
5. Maintenance
5.1 Cleaning
- Wipe the headphones and charging case with a soft, dry, lint-free cloth.
- For stubborn dirt, slightly dampen the cloth with water. Do not use harsh chemicals or abrasive materials.
- Ensure the charging contacts on both the headphones and the case are clean and dry.
5.2 Water Resistance
The headphones are IPX5 waterproof, meaning they are resistant to splashes and sweat. They are not designed for submersion in water. Ensure the charging port is dry before charging.
5.3 Storage
Store the headphones in their charging case when not in use to protect them from dust and damage. Avoid exposing them to extreme temperatures or direct sunlight.
6. Troubleshooting
6.1 No Sound or Pairing Issues
- Ensure both headphones are charged and turned on.
- Check that Bluetooth is enabled on your device.
- Try unpairing and re-pairing the headphones with your device.
- If only one earbud is working, try placing both back in the case, closing it, and then reopening to reset the connection.
6.2 Charging Problems
- Verify the charging cable is securely connected to both the case and the power source.
- Ensure the charging contacts on the headphones and inside the case are clean.
- Try using a different USB Type-C cable or power adapter.
6.3 Poor Sound Quality
- Ensure the headphones are properly seated in your ears.
- Check your device's volume settings.
- Move closer to your device to avoid interference.
- Clean any debris from the earbud speakers.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Redmi |
| Model | A520 |
| Material | ABS |
| Style | OWS Ear Hook Headphones (True Wireless) |
| Communication | Bluetooth 5.3 |
| Vocalism Principle | Dynamic |
| Impedance Range | Up to 32 Ω |
| Audio Codecs | AAC |
| Driver Size | 11mm woofer, 6.5mm tweeter |
| Sound Effect | 9D Stereoscopic High-Fidelity Sound Effect, Super Bass Sound |
| Microphone | Yes |
| Active Noise-Cancellation | Yes |
| Waterproof Rating | IPX5 |
| Battery Life (Headphones) | Up to 10 hours continuous listening |
| Battery Life (with Case) | Up to 30 hours (2 additional charges from case) |
| Charging Method | Charging case, USB Type-C fast charging |
| Control | Control Button, Volume Control |
| Certifications | CE, FCC, RoHS |
8. User Tips
- For Sports: The ear-hook design and IPX5 waterproof rating make these headphones excellent for workouts. Ensure a snug fit to prevent them from falling during intense activity.
- Awareness: The open-ear design allows you to hear your surroundings, which is crucial for safety when exercising outdoors.
- Gaming: Take advantage of the low-latency Bluetooth 5.3 for a more responsive and immersive gaming audio experience.
- Comfort: Experiment with the ear tip sizes (if applicable, though the OWS design typically doesn't use traditional tips) to find the most comfortable and secure fit for extended wear.
- Battery Monitoring: Keep an eye on the digital battery display on the charging case to ensure your headphones are always ready for use.
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.





