The Suunto Vector HR is your tool for peak performance, whether youre already on the mountain or training to get there. Armed with an altimeter, barometer, electronic compass, and heart rate monitor, youll have the information you need to make responsible decisions in the great, vertical outdoors.Heart Rate MeasurementIts not just the external conditions that matter when youre climbing: whats going on inside your body can make the difference between a great adventure and a miserable ordeal. Set HR zone alarms to let you know when your heart rate is climbing faster than you areor when your training regimen is too easy. Training for a climb with the HR monitor gives you an objective measure of exertion, whether youre doing a long, steady hike, or short intervals of intense bursts of energy in the gym. Youll also be able to avoid overtraining by monitoring your resting HR first thing in the morning.