1.Bluetooth chip:ISSC 3.0
2.Aux in, compatiable with all 3.5 Audio Device
3.With Bass Diaphragm.
4.With Rubber Oil
Output power : 3W
Frequency response: 90Hz~20kHz
Impedance: 4OHM
Sensitive: 80dB±2dB
S/N Ration: ≥80dB
Distortion: ≤0.3%
Input power: USB 5V/lithium battery