The RKS02 Wireless Headphone has Bluetooth connectivity
40mm Diameter Driver Unit
Supports BT 5.0 Version
10 Meter Scope
6 Hours Talk Time
16 Hours Standby
End Number Redial Function
Volume Up and Down, Forward and Back, Pause and Play Selection

USB charging cable : Input 110-220VDC Input 5V

Operating Frequency :2.4GHz-2.483GHz

Output Frequency : class2

Support A2DP function.