Shaman Cool looking oking digital polarized lenses (MP3 and WMA player) are built in High Definition Sound for great stereo effects, give the wearer extreme freedom to enjoy music with no wires or cords to dangle or tangle. The digital music sunglasses from Shaman offer today the highest quality product at the best price. Active wear digital sunglasses are what we all need, no matter what sport we are playing or watching, activity we are involved in or occasion we are enjoying. It gives the wearer complete freedom to enjoy music during these activities. How GAS Digital music sunglasses work ? There is a a memory flash storage in the sunglasses, plug and play! Window will automatically detect the sunglasses without any drivers! you can download music files or any mp3 book files from your computer and save in it, then wear onto ear and listen. Especially suitable for those people who like outdoors activities, Listening & Exercising, wonderful! You can study foreign language, listen to mp3 book and for sure enjoy your favorite music even when you are biking, climbing, exercising, jogging, skiing or just relaxing on the beach or in your home . What is High Definition Sound High Definition sound, is an audio standard created by Shaman l to be used on their  Gas music lens polarized made in Usa  Polarized Sunglasses Ask anyone who spends a lot of time in the sun and they will tell you, polarized sunglasses are a must. For years, boaters and fishermen have used polarized sunglasses to reduce reflected glare from the water surrounding them. But now that many others who spend time outdoors have discovered the benefits of polarized lenses, the popularity of these types of sunglasses has soared. Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, golfers, bikers, and joggers, who enjoy a clearer view along with elimination of glare.   GAS Product Description 1) Unique design: combines the digital music and polarize lens, swiveling and extendable earphones. flip up glasses design. 2) Transfer speed: up to 1.4Mbps 3) Interface: USB 2.0 (backward compatible with USB 1.1)A hi-speed USB 2.0 cable is included for transferring songs from Mac? or Windows? PC, 4) Music formats: supports MP3 (up to 320Kbps), WMA (up to 192Kbps) 5) Earphone adjustment: adjusts the earphone extender to fit your ear. The earphone Pivot can be pulled forward and pushed back; each earphone is mounted on a telescoping pole 6) Battery capacity: built-in Li-ion-polymer/3.7V, 150Ah, up to 5 hours of continuous playtime 7) Memory size: /1GB/2GB 8) Signal to noise ratio: 90dB 9) THD: d1% 10) Frequency response: 20Hz-20,000Hz 11) Maximum input power rating: 5V DC, 150mA 12) Accessories: hi-speed USB 2.0 cable, manual (English ), travel charger, Sunglasses Case 13) Certificate: CE, FCC, RoHs 14) Color: black, grey, silver 15) Correct size assures fit, comfort and optical performance 16) Maximizes light transmittance  17) Blocks glare caused by light reflections on flat surfaces such as water, roads, sand and snow  18) Protective case keeps system pieces together  19) Weighs only 52g  20) 00% protection from harmful UV-A, UV-B and UV-C rays