The SwiMP3 1G shines from a music standpoint, with 1GB of memory and support for both MP3 and WMA files. Listeners have a basic selection of controls, including volume, shuffle, and resume, with an MP3 control panel built into the side panel. And when you're ready to swim, the player attaches easily to your swim goggle or snorkeling mask. Other details include a rechargeable battery that lasts for up to 8 hours per charge, a built-in USB plug that inserts directly into your computer (no cable required), and a lightweight housing that weighs only 2 ounces. Designed to hold approximately 240 songs, the SwiMP3 1G is compatible with Windows 98 SE, 2000, Me, and XP and Mac OS 9.x and 10.x.