Firstbeat features (11)
Whether out for a run with friends or gearing up for race day, the Forerunner 645 Music makes it easier for runners to get the data they need.
Featuring similar high-end fitness, wellness and smart connectivity features as on previous Forerunner devices, the Forerunner 645 Music gives users an extra pep in their step with ondevice music storage.
Athletes can better prepare for a race or training cycle with the help of training features provided by Firstbeat. Training status automatically evaluates previous exercise and fitness levels to let athletes know if they are training productively, peaking or overreaching. Measuring exercise volume from the last seven days, training load helps users determine if they are training in the right zone and whether their sessions are too easy or hard. Additionally, the anaerobic training effect metric will tell athletes how their hard work and training is improving their ability to push the limits.