Product parameters:

Battery net weight: 70 gr.
Diameter: 35mm.
Length: 65mm.
Connector: RCA connector
Battery capacity: 1500 mAh
Operating Volts: 4-12V
Input: DC 5V 1A
Color: Black
Operating hours: about 5-8 hours

Wireless design allows for convenient carrying and charging.
The voltage can be freely switched between 4-12V, with an accuracy of 0.1V.