1.Bluetooth version:4.2

2.Output Power: 20W

3.Charging voltage: DC 5V

4.Lound Speaker Spec：52mm  5W

5.Frequency response:50Hz-20KHz

6.Lithium battery capacity:4400mAh

7.THD:≤0.5%

8.SNR≥95dB

9.Dimensions:190×60×70mm