1.card sound box 2.portable speaker 3.usb speaker 4.led speaker 1.portable card sound box2.Color: black, Size:145*75*80mm3.Support digital card, USB mass4.storage device,movile,lamptop,mp3,mp4.5.Standard 3.7V battery. Charging voltage:DC5V±0.5V6.Frequency response:300Hz-20000Hz,Output power:2W+2W7.Working current: 400Ma, Speaker impedance:4 Ohm*4 portable wood card sound box