Not sure how accurate watch-based VO2 Max really is, but before getting the Hydrow, it said my VO2 Max was 38.5, giving me a "fitness age" of 42. I'm 40. After using
Understand your running watch data – VO2 Max, cadence and EPOC explained - Wareable
Suunto 5 - Features - Fitness level
Suunto 9 Peak In-Depth Review | DC Rainmaker
Suunto - Did you know that your #Suunto watch can estimate your current fitness level and help you follow your progress? Your fitness level is defined as VO2max (maximal oxygen consumption), a
TutorialTuesday Running Performance Level
Software update available for Suunto 9
Suunto 9 Series Gets New Sleep & Fitness Metrics from FirstBeat | DC Rainmaker
Software update available for Suunto 9
Suunto Ambit3 Sport - Features - Running performance level