Specification: 

Bluetooth version: V5.0

Transmission range: 10 metes

sigani-to-noise ratio:84db or higher

Signal-to-Noise: ≥80dB+2db

Battery Charging Voltage:5V±0.5V

Frequency range: 85Hz-20KHz 

Battery type: Li-ion battery 

Play time:about 6-7 hours 

Size: 190mm*56mm*60mm 

Color：black,red,blue,silver