Wireless dual-ear design, left and right ear channel separation. You can use the headset solely or used them in pairs. BT 5.0 brings high data transfer speed, stable connection, and low power consumption.Fast & Easy Paring:Auto power on and fast pairing between left and right earbuds once taking out of the charging case. Easy and quick to pair with BT-enabled audio devices. Effective distance is about 10 meters in open space.Long Battery Life:43mAh battery in each headphone ensures 4-5 hours of working time. Charged automatically in the 380mAh charging box which enables dual headsets charging for about 4 times. Supports up to 20 hours playtime in total.Great Sound Quality:Supports SBC+AAC professional audio codec technology, T1C restores the original sense of dynamic, catches every detail of sound, delivers the passionate feeling in songs, thus immersing you in the music world.Born for Sports:4.6g lightweight and mini size fit well to your ear canal and provide you long time wearing comfort. It guarantees stability when doing sports. With charging box, easy to store and carry anywhere.Hands-free with Dual Mic:BT5.0 chip offers noise reduction function which grasps the detail of voice greatly. Built-in Mic on both earbuds delivers clearer and more real talking sound in stereo mode.