Bluetooth 5.1

Input voltage: 180mah 3.7V rechargeable lithium battery

Play time: 15 hours,                           talk time: 18 hours long   standby time: 250 hours

Charging input voltage: DC5V 500MAH

6u loudspeakers*2 low bass

Frequency response range: 20Hz-20KHz

Sensitivity:   93dB 2dB

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

Distance: barrier-free 10m                                     

Type-C fast charging port,30min full charging