We have thoroughly tested 14 different heart rate monitors (HRMs) and declare the Garmin Forerunner 235 to our Best Choice. The Forerunner 235 is an easy to use running watch that has many advanced yet practical features. Alongside its built-in heart rate monitor, the watch accurately counts how many steps you've taken that day, the distance you have travelled and the calories you have burned. It can also keep track of your sleep, both in regard to quality of sleep as well as quantity of sleep. The best pulse watch for triathletes is the Garmin Forerunner 735XT, a user-friendly HRM watch with a long battery length which has the ability to pair with smartphones. The Polar M400 HRM is our best budget choice. It is a reasonably priced watch which is both easy to use while still feeling robust and user-friendly.