Compliance: Bluetooth V3.0 +EDR

Operation distance: ≤10M

Operation frequency: 60HZ-20KHZ

Impedance: 4Ω

Receiving Sensitivity (TYP):-90dBm 

Output power: 3W

Audio signal -noise ratio(SNR): >65dB 

USB charging voltage: DC 5V

Working voltage: 3.7V

Power:  Rechargeable 400mAh lithium-ion battery

Working: 4 - 5 hours on middle volume (60%)