PyleHome Bass Expanding Mini Speaker With Built-In USB & SD Card Reader (Red)

Plays all iPod/iPhone models and other audio devices with 3.5-mm audio jack Custom-tuned vacuum bass design for low frequency response and sound beyond size Fits in your Hand / Pocket for ultimate portability Built in li-ion rechargeable batteries Built-in amplifier powered by rechargeable battery Play Music From USB Drivers Or SD/MMC Cards Slim Design for easy Transport Volume +/- Button, Easy To Adjust Volume Battery can support MP3 player Card Reader: Mini SD/MMC card Support And USB Port Full Function Remote Controller Color: Red Dimensions:2.1''D x 1.6''W x 2.5''H