Item No.: K11R147
.Bluetooth version: Bluetooth 4.0 +EDR
.the longest transmission distance of 10 meters
.Support bluetooth speakerphone function
.Frequency：2.4GHz
.Battery:3.7V 60mah Lith-ion Battery
.3.5mm solid input socket
.Work time: about 2 Hours
.With USB  cable(30cm)
.Size:25*11*53mm
.Material:ABS