DESC: Product Features: Interface: USB; Storage Capacity: 160 GB; Screen Size: 2.5 inch; Number of Songs: 40000; Usage: Music, Photo Viewing, Video; Audio Format: AAC, AIFF, Audible, MP3, MP3 VBR, WAV; Video Format: H.264; Max Video Resolution: 640 x 480; Battery Life: Up to 36 Hours; Battery Type: Li-ion Battery; Power Source: Internal Battery, Rechargeable via USB cable; Depth: 0.41 in.; Height: 4.1 in.; Width: 2.4 in.; Weight: 4.9 oz.; Weight and Size: Midsize; Family Line: iPod classic