Bluetooth 5.0V

Input voltage: 3.7V rechargeable lithium   battery

Play time: 8-10 hours,                           

talk time: 12 hours long                       

150mah battery

Charging input voltage: DC5V 500MAH

10MM loudspeakers *2

Frequency response range: 20Hz-20KHz

Sensitivity:   100dB 2dB

Signal-to noise ratio: 80Db Transmit/Receive Frequency: 2.4---2.48GHz

Distance: barrier-free 10m