Introduction
This manual provides essential information for the proper use and maintenance of your Redmi SonicBass Wireless In-Ear Earphones. Please read it carefully before using the product to ensure optimal performance and longevity.

Image: Redmi SonicBass Wireless Earphones, showcasing the neckband design and earbuds.
What's in the Box
Verify that all items are present in the package:
- Redmi SonicBass Bluetooth Earphones
- User Manual
- Eartips (6 units)
Setup
1. Charging the Earphones
Before first use, fully charge the earphones. Connect the micro-USB charging cable (not included) to the charging port on the neckband and to a power source. The LED indicator will show charging status.
- Charging Time: Approximately 2 hours for a full charge.
- Battery Reminder: The earphones will provide a low battery reminder when the charge drops to 20%.
2. Initial Bluetooth Pairing
- Ensure the earphones are powered off.
- Press and hold the multi-function button until the LED indicator flashes red and blue, indicating pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Redmi SonicBass" from the list of devices.
- Once connected, the LED indicator will turn blue.
3. Multi-Point Dual Pairing
The Redmi SonicBass supports connecting to two devices simultaneously, allowing seamless switching between them.

Image: Illustration of the multi-point dual pairing feature, allowing connection to two devices.
- Pair the earphones with the first device as described in "Initial Bluetooth Pairing".
- Disable Bluetooth on the first device. The earphones will re-enter pairing mode.
- Pair the earphones with the second device.
- Re-enable Bluetooth on the first device. The earphones should automatically connect to both devices.
- To switch between devices, simply play audio or answer a call on the desired device.
Operating Instructions
Multi-Function Button Controls
The multi-function button provides quick access to various controls:

Image: Close-up of the earphone controls, highlighting the multi-function button and voice assistance capability.
- Power On/Off: Press and hold for 3 seconds.
- Play/Pause Music: Single press.
- Answer/End Call: Single press during an incoming call or active call.
- Reject Call: Press and hold for 2 seconds during an incoming call.
- Activate Voice Assistant: Double press.
- Switch Between Calls: Double press during an active call with another incoming call.
- Mute/Unmute Call: Triple press during an active call.
Volume and Track Control
- Volume Up: Short press the '+' button.
- Volume Down: Short press the '-' button.
- Next Track: Long press the '+' button.
- Previous Track: Long press the '-' button.
Features
- 12-Hour Battery Life: Enjoy up to 12 hours of continuous music playback or call time on a single charge.
- Dual-Mic Noise Cancellation (ENC): The integrated dual microphones suppress environmental noise, ensuring clear voice transmission during calls.
- 9.2mm Dynamic Drivers: Equipped with 9.2mm dynamic drivers for superior sound quality and enhanced bass response.
- IPX4 Splash & Sweat Proof: Designed to withstand splashes and sweat, making them suitable for workouts and outdoor activities.
- Lightweight Neckband with Flexi-Arc Design: Provides comfort and stability for extended wear.
- Bluetooth 5.0: Ensures a fast and stable wireless connection with compatible devices.
- Voice Assistant Support: Compatible with Android and iOS voice assistants.

Image: Redmi SonicBass earphones emphasizing clear call quality with dual-mic noise cancellation.

Image: Exploded view of an earbud, illustrating the internal components including the 9.2mm dynamic driver for bass-heavy music listening.

Image: Redmi SonicBass earphones shown in a context suitable for workouts, highlighting their IPX4 splash and sweat-proof rating.
Maintenance
Cleaning
- Regularly clean the earbuds and eartips with a soft, dry, lint-free cloth.
- Remove eartips and clean any earwax or debris from the speaker mesh using a small, soft brush.
- Do not use harsh chemicals, cleaning solvents, or strong detergents.
Storage
- Store the earphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid storing with sharp objects that could damage the cables or earbuds.
Water Resistance
The earphones are IPX4 rated, meaning they are resistant to splashing water from any direction. They are not designed for submersion in water or exposure to pressurized water jets. Do not use them while swimming or showering.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Cannot power on | Low battery | Charge the earphones fully. |
| Cannot pair with device | Earphones not in pairing mode; Bluetooth off on device; device too far | Ensure earphones are in pairing mode (flashing red/blue). Turn on Bluetooth on your device. Move device closer to earphones. |
| No sound or poor sound quality | Volume too low; earphones not connected; debris in earbuds | Increase volume on earphones and device. Reconnect earphones. Clean earbuds and speaker mesh. |
| Calls are unclear (for receiver) | Excessive environmental noise | Move to a quieter environment. Ensure microphones are not obstructed. |
| Earphones disconnect frequently | Device too far; interference; low battery | Move closer to the connected device. Avoid strong electromagnetic interference. Charge earphones. |
Specifications
| Model Number | INLYEJ02LS |
| Brand | Redmi |
| Color | Black |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Noise Control | Sound Isolation (Dual-Mic ENC for calls) |
| Audio Driver Size | 9.2 mm |
| Bluetooth Version | 5.0 |
| Water Resistance Level | IPX4 (Splash Resistant) |
| Battery Average Life | Up to 12 Hours |
| Battery Charge Time | 2 Hours |
| Item Weight | 21 Grams |
| Material | Plastic |
Warranty Information
The Redmi SonicBass Wireless Earphones come with a 6 months limited warranty from the date of purchase. This warranty covers manufacturing defects. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
Please retain your proof of purchase for warranty claims.
Support and Contact
For technical support, warranty claims, or further assistance, please contact the manufacturer or importer:
- Manufacturer: Chongqing Qianxing Technology Co,. Ltd.
- Manufacturer Contact Information: Xiaomi Technology India Private Limited Building Orchid. Block E, Embassy Tech Village Marathahalli Outer Ring Road, Devarabisanahalli, Bengaluru 560103
- Importer Contact Information: Xiaomi Technology India Pvt. Ltd., Orchid (Block E), Embassy Tech Village, Devarabeesanahalli, Marathahalli-Sarjapur Outer Ring Road, Bangalore – 560103, Karnataka
For the most up-to-date support information, please visit the official Redmi website or your regional support portal.





