Timex Intelligent Quartz Depth Gauge

For divers, depth is as critical to track as time, yet a depth gauge is a rare and often expensive addition. Timex managed to sneak not only a depth sensor into this sub-$300 watch but also a temperature gauge. So when you're as far as 196 feet below the ocean's surface, you can know exactly how cold you are. [$250; timex.com]