1in screen size.Stores up to 2,000 tracks.Up to 15 hours audio playback.Rechargeable via USB port.Size (H)5.51, (W)3.43, (D)1.65cm.OLED display.2.0 mini B connector USB port. 4GB memory.Includes expandable memory card slot for micro SDHC memory cards up to 16GB.MP3/WMA compatible.Repeat, shuffle function.FM radio.CD supplied with user manual.Minimum PC specification: Windows XP SP2/ Windows media player.Built-in clip for ease of carrying.In ear headphones (supplied).Built-in rechargeable battery.Weight 25g.Manufacturer's 2 year guarantee.