Retro Style Radio Speaker USB SD Card slot, 2x3W Speaker FM Radio Disco light around speaker ring Built-in lithium battery Vintage design Speaker with SD/USB SlotFM Radio: 87.5-108.5MHz, can store 20 radios as memory2 Speakers: 4ohm, 3W, Aux-inBuit-in lithium battery: 3.7V, 600mAhSupport infrared romote control