Specification - Product : Character MP3 Player - Memory Capacity : 2G - Decording Format : MP3, WAV, WMA - Included Components : Earphone, USB Port - Play Time/ Recharge Time : 17hr / 1.5hr - S/N Ratio : 90dB - Product Size : 57(H)X32(W)X31(D) - See more at: http://www.bestmadeinkorea.com/product-8081/Entertainment-Education/COOI-MP3.html#sthash.2uP6nWGy.dpuf