bluetooth speaker  
 

1.Wireless (bluetooth )
3.Output Power:2.5W*1=2.5W
4.Input Sensitivity:300mv
5.S/N:75dB
6.Frequency response:80-18KHZ
7.Speaker:33mm*1,4Ω,3W
8.Output jack: 3.5mm stereo
9.External LI-Po battery(3.7v/500mA) or 5V/500mA adapter supply