Cardio Fitness – Citizen Watch UK Help Centre

I'm wearing my watch but not getting a Cardio Fitness reading. Why is this?

Please be sure you are wearing your watch continuously to get a fitness reading, as there are a number of factors that may prevent the necessary data from being transmitted: Be sure your Gen 2 We... See more

What is Cardio Fitness and where is it available?

Cardio Fitness, available within the Gen 2 Wellness watch app, uses your resting heart rate and biometrics (e.g., age, gender, weight) to estimate your VO2max, which reflects cardiorespiratory and ... See more