Audio digital format: MP3 Capacity: 4 GB Supports for Windows 98 / ME / 2000 / XP / win 7 / view Language: English, French, German, Spanish, Italian, Simple Chinese, Traditional Chinese, Swedish, Portuguese, Danish, Dutch Energy supplied by 1 x AAA battery (not included) Material:plastic colour:Blue Package Contents: 1 * Mp3 Player Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.