"At first I thought this would be a James Bond type gadget, neat but not all that useful. After having used them, I found that the sunglasses are excellent. Rather than having to take my standalone music player, the inclusion of the MP3 Player makes listening to music an easy addition to my outdoor activities. The voice recording feature is a real plus when you are as forgetful as I am. If you can find the 512MB version for under $200.00 (currently $239.00 at Cartridge America) I would consider them an excellent value for the combination of excellent sunglasses (alone probably $100.00) and a fully featured MP3 player (Ipod Shuffle 512MB with less functionality $99.00). With a couple tweaks to this product I think GAT has winner."I'm not big on the idea of an MP3 player that is only usable when wearing sunglasses, but I can see this as a very useful combo for those who bike or run a lot. If you are looking at the Oakley Thump line, this could be a much cheaper option.