USB or Battery powered Mini Speaker 1)Operated by battery,USB or DC power ... mp3,mp4,md,ipod,computer,mobile phone USB or Battery powered Mini Speaker used for mp3,mp4,md,ipod,computer,mobile ... carrying and space saving.high resolution IC and 3D surrounding sound effect.Product size:10cmx10cmx12.9cmMaterial: ABSColor: whiteVol: 4V-6VOperated by ...