Mpman MP152. Player media type: flash-media, Total storage capacity: 4 GB. Display diagonal: 38.1 mm (1.5 "). Audio formats supported: MP3, WMA, Image formats supported: JPG. Depth: 79 mm, Height: 40 mm, Width: 10 mm. Dimensions (WxDxH): 10 x 79 x 40 mm, Compatible operating systems: Windows XP/Vista/7, Standard interfaces: USB