Planning and implementing a training program is enough work in itself. It takes time, math, hours of recording data and progressive tracking. The Timex Ironman Run Trainer GPS HRM helps eliminate many of these logistic headaches. The watch houses a pedometer, heart rate monitor, GPS system and more. Simply put, the Ironman Run Trainer is like a personal trainer attached to your wrist. It’s user-friendliness gives it an advantage over many other smart watches. The large screen and GPS system are simple enough to use while in action, so you won’t need to lug the user manual with you.