Until 4 weeks ago I trained with an app on my iPhone. Since here but an upgrade on heart rate measurement is not very cheap and also the GPS signal quite often was particularly on cloudy days and in the woods, I decided to buy a GPS clock with heart rate measurement. Due to the performance and the relatively low price, the choice quickly fell on the Ironman Run Trainer Timex. Even though the setup and operation of the clock was initially some getting used to, I'm now all very happy in all. Otherwise, Reviews defiance the GPS signal is found quickly (and after receiving the connecting lost not once again); the (somewhat large) clock is comfortable to wear. Of the many features included I use the measurement of pace, heart rate and distance in the first place. It is handy that similarly the overshooting or undershooting of fixed and configurable training zones report as in the Forerunnern alarms. The Hands Free - function records the time at lower Schei below a specified threshold value so that a stop at traffic lights or railroad crossing does not lead to distortion of power. The Interval Trainer is the most diverse training can be planned including. Warmup and cooldown. The graphical evaluation is carried out on the free use of the platform by Training Peaks. For my needs, the free version is sufficient. I want the Run coaches do not want to miss and can recommend it without reservation.