1 plastic speaker
2 low-frequency and medium-high frequency radiate in same direction,reducing disturbance
3 USB support both message in and power supply,so it is more convenient

1.Speaker Dimension:2 inch
2.Impedence: 4 Ω
3.Output: 3W+3W(L+R)
4.Frequency Response 90HZ—20KHZ
5.S/N :80dB±2dB
6.Distortion: ≤0.3%
7.Power Supply: replaceable & external Li-ion battery
8.Charger:USB 5V
9.Audio Connectors:3.5MM stereo
10.Input Connector: USB ,SD Card,3.5mm stereo cable