Bluetooth version: V4.1
Output power: RMS 3W*2
Speaker: 4_, 3W, _40 mm
Battery capacity: 400 mAh
Input power: DC 5V
Frequency response: 90-18KHz
Sensitivity: 500mv±50mV
Signal to noise ratio: _70dB
The distortion degree: _0.3%
Working time: Headphones mode: 5 hours
Speakers mode: 2 hours
Charging time: About 2 hours
