• Comfortable to wear, self-adjusting, not easy to fall off.• TWS Bluetooth 5.0 Stable Connection with DSP Noise Cancelling. Automatic Pairing (Second Connection) Bilateral Call, Double-ear multifunction button, anti-missing• bluetooth earbuds noise cancelling bluetooth earbuds Sweatproof bluetooth earbuds for cell phones bluetooth earbuds for note 4/5/6/7/8/9/10 Galaxy s6/s7/s8/s9/s10 X 6 7 7plus 8 8plus x xs xr xsplus bluetooth earbuds with mic microphone bluetooth earbuds with charging case bluetooth earbuds with bass bluetooth earbuds with volume control bluetooth earbuds with neckband bluetooth earbuds with earhooks bluetooth earbuds with mic• True wireless bluetooth headset , Bluetooth 5.0, Automatically connected. A New Generation of Bluetooth 5.0, faster and more stable.Redmi AirDots is equipped with the latest Bluetooth 5.0 chip, the data transfer rate is up to 2 times compared with the previous generation, the connection is faster and more stable. Listening to songs and playing games are smoother.• The music is nice and the call is clear.7.2mm Dynamic unit And DSP intelligent environment noise reduction.Three models of earplugs to meet your higher requirements for closure and firmness, even when running, punching, and listening to music on the road.4hr of battery life on one charge, 12hr of battery life with charging case, One earphone with 40Mah Battery,Charging Box with 300Mah Battery