Power: 3W
<br />Battery capacity: 400MAh
<br />Duration: 4 hours
<br />Features: Bluetooth, radio, hands-free calls
<br />Carbonization voltage: DC4.8V-5.0V
<br />Operating voltage: DC3.7V-4.2V
<br />Number of speakers: 1
<br />Signal to noise ratio:   70dB
<br />Bluetooth version: 4.1
<br />Bluetooth transmission distance: 10M
<br />Main material: PP + ABS