Fio Digital MP3 Player Sunglasses with 128 MB Memory Clever wire-free digital sunglasses with built-in MP3 player and earphones Shock-resistant housing with UV-coated lenses; supports MP3, WMA, and ADCPM formats USB drive (includes USB 2.0 cable) and 128 MB internal memory; compatible with PCs and Macs Integrated digital voice recorder with built-in microphone; 20 Hz to 20 kHz frequency response 10 mW output power (5 mW x 2); rechargeable lithium ion battery; 1-year warranty