If you’re pursuing Strava KOM segments, new from 4iiii (read: four eyes) is the Cliiiimb that provides real-time audio and visual feedback, along with heart rate chest monitor. Simply download a Strava app, link via ANT+, and when a segment begins, you can race against the time of another rider or your own PR. The unit attaches to your sunglasses. Released in November, the Cliiiimb Pro retails for $199.
This is re-blogged from those awesome guys at bike war. I could not get the video to upload while re-blogging. If you are into bike war is a great blog to follow.