Material : ABS+PVC
Color : Black /Green /Red /Yellow /Blue /White
Sixe : 82 x 65mm
Weight : 150g
Frequency : 100Hz-20KHz
Signal-To-Noise : ≥85±2db
RF Range : 10meters
Battery: Built in li-on battery
Capacity : 500Mah
Charging Voltage : DC 5V
Working Voltage : 3.3~4.5V
Run Time : 15hs