I know that these radar pace are like $449 when they first came out and you can get them brand new for a good price. I jumped on it and bought one and here's my thought. it is well designed and with good intentions to be the best sports/cycling/exercise sunglasses out there but for some reason (or more reasons) it didn't. I tried to download the Radar Pace app from apple website but couldn't get pass the account creation so I gave up. found out there's no support. I tried to synch it with my iPhone and so far so good. sound is not that great but workable and tolerable for it's purpose. that's another reason to keep it. now when you think about what's inside the box it could really be a bargain. lens is prizm and it came with one extra clear lens. that one clear lens will cost you at least $50 when you order it at Oakley. so now I do have a great extra Oakley sunglasses that I can play/use. I think this one is a keeper as I can use it as a regular sunglasses (just don't use the earpiece) that I got for a bargain. go there yourself one as it's really a bargain now. thanks.