portable speaker

1.Digital pipe display, the outer nokia 5 C battery2.Support to read TF card and USB format music file player MP3.3.Support for music play  memory.4.support stereo radio features automatic search radio stations.5.support the headphone output

 Output power:3W (THT=10%,f=1KHz)Speaker:40/4ΩFrequency response:150HZ-20KHZSNR:≥85dBDistortion:0.3%Supply voltage:3.7V=600MACharging voltage:DC5V 500MA 

TR-H550 portable speaker