5. Highgear XT7, $250
Best for on-mountain hiking and climbing
Made specifically for vertical spaces, this GPS-enabled watch offers a heart rate monitor, plus it tracks speed, distance, and pace. Use its altimeter to tell you how high you’ve climbed and its barometer to ensure you don’t get stuck on the mountain in a crazy storm. You can buy it in black with blue accents or green at select REI stores and at REI.com.
- Queen of HalloweenLook back at Heidi Klum's craziest costumes.
- The "Airpocalypse" in PhotosBeijing Marathon runners donned face masks to beat smog.
- Getting to Know Gal GadotThe Israeli actress is in the mix for 'Ben Hur' role.
- Dairy-Free Ways to Get More CalciumTen foods for stronger bones, teeth, and muscles.