Function: Call function subwoofer stereo
Power supply: Built-in lithium battery
Shell Material: Metal
Connection Method: 3.5MM Audio Jack USB Data Cable
Size: 3.0 - 3.0 inches (7.7 - 7.7 - 6.2 cm)
Support APPA:Yes
Play time: 5 hours
Voltage: 110V-240V
Please allow slight size difference due to manual measurement.