Product material：
Shell material: plastic
Details：
Bluetooth version: V4.2
Use transmission power: 1.49mW
Transmission frequency: 2.48GHz
Transmission distance: 8-10 meters
Music playback time: About 3 hours
Charging time: 2-3 hours
Standby time: 120 hours
Supported file formats: A2DP, AVRCP, HSP and HF
Battery material: 18650*2
Battery: 7.4V/2000mA
Signal to noise ratio: -80db
Frequency response: 20HZ-20KHZ
Charging voltage: DC 5V/1A-2A
Charging socket: micro 5pin (V8)
Speaker power: 5W×4
Support TF card audio input
Support 3.5mm and RCA audio input
Support U disk audio input
With radio function
.Volume: 490*50*50mm
