Wear your Oakley Thump Pro 512-megabyte MP3 Sunglasses when you train for your triathlon. These sunglasses with a built-in speaker and player system hold up to 120 songs. Even with a sound system integrated into the frame, the Thump Pro weighs half what an iPod or MP3 does, so you wont feel weighted down as you run or bike. Plus, you dont need to deal with any dangling cords. Move the speakers so you can hear your coachs instructions or tune out everything but your theme song. Nose and temple grips hold these glasses on your face, even as you perspire. Like all Oakley sunglasses, these are impact-resistant, block all harmful light, and wrap around to provide a protected peripheral view. The Thump Pro 512MB plays up to six hours on one battery charge and is compatible with Windows Media Player, WinAMP, CDs transferred to iTunes, and others. A USB cable comes included so you can download music from your computer.