Bluetooth version V5.3

Transmission distance: 10m

Horn diameter: 52mm

Parameter:4Ω 5W

Number of diaphragms 1 * 40mm

Frequency range : 70-18000 Hz.

Sensitivity : 88dB.

Charging port:type-c

Input parameter: DC5V-1A

Battery size: 18650

Capacity 1200mAh

Play time 80% 8H

Charging time：3-4H

Size 92 * 48 * 92 mm

Function:BT/U-Disk/TF/