Bluetooth version- v5 .0
input mode- bluetooth aux - tf card u disk
speaker full range unit- 66mm 4
speaker power 10w x 2
power output 20w
charging voltage 5v/1.5a
s/n 75db
distortion-10%
frequency reponse 20hz-20khz
battery capacity 2200mah/7.4v
working time about 5 hours
charging time about 2.5 hours
bluetooth distance 10m