USB Lithium Battery Speaker

Specifications:

*Output power: RMS  2W *2                           

*Frequency response:100HZ---20KHZ         

*Driveunit:50mmx2/4Ω      

*S/N Ratio:   ≥85db                      

*Dimension:W145x D50x H65mm                           

*Lithium battery :3.7V 500mA                                    

*Built-in high-capacity lithium ion rechargeable battery                          

*Transparent plexiglass outer covering