**Bluetooth 4.0+EDR(CSR chip) Stereo surround **Ultra-subwoofer
**Frequency:60hz-18khz Sound Track:2.0
**Output Power:10W*2 NFC function
**Noise Ratio:80db Wireless Bluetooth audio **transmission
**Charging Voltage:5V Bluetooth Range:20m
**Working Voltage:3.7V Battery **capacity:2200mAh
**Speaker: 10W*2 Color:silver/gold/black