You need a watch that can keep up with your summer, from the office to the bar to the beach for a swim. These five waterproof watches are built to handle offshore nautical races and military special-ops raids – a little sand isn't going to stop them. "Just as you need different types of shoes for summer, you should have different types of watches," says Alpina president Ralph Simons. "A leather strap isn't as comfortable on a hot day."
Alpina Yacht Timer
The Yacht Timer has a specialized mechanism for boat racing – as each minute passes, the watch's circles change color – but works just as well for timing laps in the pool. "I joke that it's the coolest device for boiling eggs," says Simons. "When all the circles are blue, you have a soft-boiled egg; when they're orange, you have a hard-boiled egg." [$3,695; alpina-watches.com]