Sound quality is so perdect                                  

Stereo Bluetooth Headset(CSR)                                      

Transmitter Power: Class 2

Operation Distance: Within 10m

Frequency range: 2.4026-2.480GHz

Embedded rechargable Li-batteries:450mAh

Charger output Spec.: 5.0V(300mA)

Normal charging time: ≤4 hrs

Calling time: ≥22.5hrs

Music Time: ≥16hrs

Standby time:≥180hrs

Headset Size: 171*159*69mm

Weight: 138 g