Audio Specifications: Bluetooth 4.1; Multi-point connecting the headset with two phones; Driver 9mm High Definition dynamic driver
Bluetooth Effective Range : within 10 meters (33 feet) and Frequency response 20 – 20k Hz ; Impedance 16 Ω15%; Microphone Sensitivity -11, 4dB
Operating Keys: Power on/off, answer/end call, reject call, volume control, track control, play/pause music
