Firstbeat features (11)
VO2max Fitness Level
Your true fitness level and key to personalized training guidance.
All-day Stress & Recovery
Reveal how your body responds to the challenges of life and environment.
Real-Time Performance Condition
See how you are doing and gain insight along the way.
Training Effect: Aerobic
Reveal the physiological impact of your activities to find the perfect training for you.
Training Effect: Anaerobic
Unlock the secrets of top-performance in activities with high-intensity demands.
Recovery Time Advisor
Ensure adequate recovery to reap the full reward of your efforts.
Training Load
Keep track of the physiological impact of all your training activities over time.
Training Status
A groundbreaking approach to training effectiveness evaluation.
Quick Stress Level Test
Gain access to the level of physiological stress in your body.
Calories Burned
Accurate calorie counts for daily life, top performance, and everything in between.
Lactate Threshold
Your ultimate guide to endurance training and personalized training zones.
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.
