The Sorell SF 2000 is more than just a flash based MP3 player - there is also a built in voice recorder and FM tuner. Plus the unit can double as a USB flash drive, making filing transfer quick and easy. The SF 2000 is available in? 256MB and 512MB configurations. The player is really small, just 3.1" long by 1.2" wide by 0.59" thick and weighs just 1.52 oz. Power is supplied by a built in battery that will last an amazing 25 hours.