(1)Bluetooth version:Bluetooth V5.0

(2)Working Range: 10meter

(3)Built in 1200mAh rechargeable battery

(4)Working time: up to 4 hours

(5)Distortion: <0.5%

(6)Frequency response: 100HZ-18K HZ

(7)Loudspesker output: 4Ω3W

(8) LED light up your big LOGO in blue, white, red and green color optional;