Model ---------------------- Redmi Buds 4 (M2137E1)
Weight ---------------------Single earbuds(4.5g) / total:(49g)
Charge Port----------------USB Type-C
Codecs---------------------AAC
Size-------------------------18.4*21.9*24.6mm(single earbuds) / 48.6*64.9*26.2mm (charging box)
Wireless Connect----------Bluetooth 5.2
Bluetooth Distance---------10m
Waterproof Level----------IP54
*In Barrier-free open environment
Earphones Battery Life --6h ANC OFF (Earbuds)/30h ANC OFF (With Charging Case)
Package Content------------Redmi Buds 4 x 1 pair / Charging Case x 1 / Manual x 1 / Type-C Charging Cable x 1 / Earplugs x 3 pairs(S/M/L, M already installed)


Redmi Buds 4

A true wireless earphone with active noise cancellation

6 features

 35dB active noise cancellation

 3 modes avaiable for ANC

 Dual-mic call noise cancellation

 Dual-device connectivity

 10mm dynamic driver

 30h long battery life max

One-click to turn on active noise cancellation

Maximum depth up to 35dB. Whether it is a noisy outdoor or a bus or subway with noisy people, you can turn on Do Not Disturb with one button, allowing you to enjoy the beautiful music anytime, anywhere.

Three level adaptive noise reduction

Using the AI intelligent algorithm, it can actively adjust according to the noise level of the environment, switch different noise reduction depths for you, and make the noise reduction experience more comfortable.

Dual-mic AI call noise reduction

The artificial intelligence AI voice algorithm can accurately identify human voice and environmental noise, and can accurately pick up the voice even if you are talking in a noisy environment.

Dual transparency mode

Want to switch freely between music mode and chat mode? Long press to enter transparent mode, and you can talk to your friends while wearing headphones.

Superior sound quality

The 10mm large-sized moving coil unit can make people's voice more pleasant, the low frequency is fuller, and the treble is clearer. Choose a high-quality diaphragm as thin as 0.006mm to restore more details to your favorite music.

Xiaomi Acoustic Custom Tuning

According to the headphone structure and acoustic principles, the detailed mixing and joint tuning is carried out to create a more professional frequency response curve.

Up to 30 hours long battery life

A single battery life of up to 6 hours, with the charging case, the battery life of up to 30 hours. (turn off ANC)

Bluetooth™ 5.2 for lower gaming latency

Hear changes faster and react faster to help you win the game.

MIUI Quick Connect

Open the case cover and connect with your xiaomi phone.

Sensitive touch operations

Double tap, hold, or triple tap to switch between modes — simple, convenient and efficient.

Dust and water-resistance for daily use

Expertly designed with IP54 dust and water-resistance. Enjoy extraodinary performance in a range of settings, from your daily commute to your time in the gym.

And more useful features

Take off the headset to automatically pause, put on the headset to continue listening seamlessly.

When within range of a Bluetooth connection, the headset can be found through the phone.

One-click reconnect to bluetooth devices.