Product dimensions: 204* 140* 73mm

The size of the color box is 236X 172X 89mm
Product weight (bare machine) : 486g
Product weight (including packaging) : 807g
Packing quantity: 20PCS
Outer box dimensions: 48.2* 35.6 * 43.8 cm
Bluetooth version: V5.3
Supported protocols: BR+EDR+BLE
Audio decoding: MP3, WMA, WAV
The communication distance is 1:0 meters
Operating frequency band: 2.4GHz
Charging voltage: 5V
Charging time: Approximately 20 hours
Battery model and specification: 18650 3.7V, 1500mAh
Music playback time: 7 to 8 hours
Charging interface: TYPE-C