Output : 2.4 W
Rating Power : 1.8 W
Size : 50W x 50L x 35H (mm)
Speaker : 36 mm micro speaker, 4 Ohm
Frequency Response : 100Hz-20kHz
Signal to noise : >85dB
Distortion : <0.5%
Battery Voltage : 3.7V
Battery Capacity : 250 MAH
Battery charging voltage : 4.2V土0.05V
Charge Time : DC(2.5 hours), usb 4Hours
Color : many colours avialble