Discovery News: Hydro Tracker GPS

Whereas lap swimmers need to know how to do that fancy underwater flip, you open water swimmers want to know your splits, speed, distance, accumulated time and elevation. Just clip a precalibrated Hydro Tracker to your goggle straps and you’re ready to use GPS to track your performance. Its rechargeable battery will keep up with you for 8 to 16 hours, depending on how you adjust the sampling rate. Whether you’re a Mac or PC user, you’ll be able to view and zoom in on your route with online mapping. And the included neoprene armband makes it a natural for tracking the trails you blaze on dry land.