1. bluetooth chipset : 1536U
2. bluetooth version: V5.0
3. support hand free call
4. Range of distance : 10M,
5.Build in battery 25mah lithium battery,with 250mah charging stock
6.charge time : 1-2Hours
7.playback time : 2-3hours
8.material : ABS
9.color : black, white
10.Accessory: manual , usb cable
