USB mini speaker

specifications Rated power:5W R.frequency:90Hz-20KHz Drive unit:2*40mm S/n ratio:≥80db Battery:built-in Decoding system Working voltage: DC5V Selling point: display screen/FM radio/earphone Interface type: U disk/SD card Body Size 210*63*32mm N.W.(kgs) 15.50 Package size 240*95*50mm G.W.(kgs) 17.90 Q'ty/CTN 50pcs/CTN Carton Size 550*265*515mm