TrekStor i.Beat cebrax 1 GB (71810) MP3 Digital player (Black) 1 GB flash memory; Up to 10 hours of operation on a single AAA Battery Playable file formats - MP3, WMA, WAV; ID3 tag display; language selection Integrated voice recorder; Direct connection to USB port Files can be deleted directly on the player; Resume function; Automatic shut-off with sleep timer function Mobile data storage device (USB stick), Compatible with Windows, Mac and Linux, Vista Ready