When we first saw Recon Instruments' Jet at Google I/O last year, we expected to be using it to monitor our heart rate and speed on the track by fall. But alas, it wasn't to be. In November the company delayed the launch of the extreme sporting sunglasses by "a few months," and today it broke our hearts a little more -- postponing the first shipments until September 25. Adding insult to injury, if you want to snag a pair of the high-tech glasses you're also going to have to shell out a little more cash. Starting this summer the device will be priced at $699, up $100 from its original $599 price tag.