Bluetooth version:V5.0Support distance: 10metersBattery:35 mah/300mahLasting time:3~4 hoursStandby time: 6hoursCharging time: 50minsHeadphones:2 HeadphonesKey: touch keyHands free: Binaural callFit mobile phone model:For iPhone 5 5s 6 6s 7 8 x xiaomi huawei  Main features:Feature 1:bluetooth 5.0 smart connectFeature 2:light touch comprehensive controlFeature 3:100% compatible with all of smartphone, table, laptopFeature 4:auto turn on and off