Protect your eyes and get Absolute music freedom with no wires or cords to tangle with the cool Nu Tech Dark Shadow MP3 Sunglasses! With up to 256 MB of built-in memory you can store up to 60 songs, and you can also get up to 36 hours of voice recording! Its USB 2.0 interface makes it simple to Download, Upload, and Recharge. The Nu Tech Dark Shadow MP3 sunglasses are compatible with MP3, WMA, and ADCPM formats, and feature 3D stereo sound. With its Polarized lenses you can filter out 100% of all UVA, UVB, UVC and harmful blue light. Get yours today!