●power supply: 5.0V  

●OUTPUT:  3W*2(RSM)  

●RF: 150Hz-20KHz  

●S/N Ratio:≥85db  

●impedance:4Ω  

●support SD card playback power memory  

●external lithium battery, charger, easy to dismount  

●AUX input to connect a variety of free sources  

●input power: DC 5V  

●input interface: 3.5mm

●write to:cina#zstaison.com

●MOQ:2000pcs

●CE, RoHS compliant