Interface: Bluetooth v.4.1
Transmitting power: max 5 dB
Supported profiles: HSP, HFP, A2DP and AVRCP
Rechargeable 250 mAh Li-ion battery
Recharging time: 2 hrs
Operation distance: up to 10 m in the open air
Speaker diameter: 40 mm
Speaker frequency response: 20 Hz - 20000 Hz
Sensitivity: 93 dB
Impedance: 32 Ohm
Microphone: 360 degrees omni-directional
Input voltage: 5 V DC
Power consumption: 3.7 V DC, up to 45 mA
Dimensions: 170 x 175 x 70 mm (L x W x D)
USB charging cable length: 1 m
Net weight: 130 g

System requirements
Bluetooth enabled mobile phone, PDA, laptop or PC
Apple devices running IOS 6 or higher will show the battery status of the headset on their display. (no special app required)