The Suunto X6HR provides you with tools for analyzing and improving your performance in your favorite endurance sport. As well as information enabling safe decisions in the wilderness. The X6HR is a combined heart rate monitor and altimeter that comes with the new Suunto transmitter belt. It is a perfect tool for endurance athletes who want to improve their training. The X6HR provides data on your surrounding environment as well as downloadable statistics on your own heart rate during those conditions. Making it the perfect tool for tracking your performance level and helping you figure out how to improve.