A heart rate monitor measures intensity to gauge output. Using a
heart rate watch you can measure zones to keep at the proper intensity. We carry running watches, heart rate watches, cycling watches, and the top brands like Timex, Polar, Garmin and Suunto. A sophisticated heart rate monitor watch like the Polar RCX5 and dozens of Polar heart rate monitors work for many types of exercises and sports.
bike computer delivers data to help manage output and conserve energy. Some GPS bike computers offer advanced mapping data, power data and more. Don't guess, know how fast, how far and what intensity you are at to manage your reserves. Bike computers by Timex, Polar and Garmin units are the most advanced and the Garmin Edge 510 and the Garmin Edge 810 are what the pros use.
The GPS watch has redefined accuracy for speed and distance. GPS watches can measure power output, heart rate, speed, distance and more. The
Garmin Forerunner 910XT and the Garmin Forerunner 610 are Garmin's models. Suunto has the Suunto Ambit 2. Polar has many compatible models that use a GPS sensor including the Polar RCX5. The new Garmin fenix looks to be a category killer.