... power 2)used for mp3,mp4,md,ipod,computer,mobile phone USB or Battery powered Mini Speaker used for mp3,mp4,md ... ,ipod,computer,mobile phone etc.Lightweight and compact for easy carrying and space saving ... :10cmx10cmx12.9cmMaterial: ABSColor: whiteVol: 4V-6VOperated by 4x"AA" batteries,USB or DC4V-6V.Power: 4WPacking: 1 pc/color box 30pcs ...