1.Power supply: DC5V-6V (built-in rechargeable battery )

2.Power output:2.2W

3.Frequency:200Hz~12kHz

4.Impedance:4Ω

5.Signal and noise ratio of power amplifier≥89db

6.Loud speaker:36mm    &nbs p;      &n bsp; 

7.Battery: rechargeable lithium ion battery 3.7v 250mah     &nbs p;      &n bsp;        

8.Dimension:D×H   ;50mm×36mm    

9.Product weights: 50g      & nbsp;    

10.Packing: each in a color box :60pcs/CTN

11.GMEAS:49.5*25*35.5(CM) < /span>

12.GW:6KGS< /p>