fēnix 3 HR multisport training GPS watch is rugged, capable and smart. With feature sets for fitness training plus feature sets for outdoor navigation, fēnix 3 HR is ready for any training activity and competition. Access to the Connect IQTM platform allows customization of watch faces and data fields and provides downloadable widgets and apps.Serious Style That Stands Up to the Roughest ConditionsThe sleek fēnix 3 HR watch features a protective PVD-stainless steel bezel and buttons, treated silicone band and reinforced housing for extra durability. A sunlight-visible, high-resolution color Garmin Chroma Display with LED backlight lets you access your data in any light. fēnix 3 HR is water-rated to 100 meters and has a battery life of up to 40 hours in UltraTracTM battery saver mode, 16 hours in GPS mode and up to 2 weeks in smartwatch mode (all depending on settings).Elevate Wrist Heart Rate Technologyfēnix 3 HR watch includes Elevate wrist heart rate technology¹, giving you the option to monitor your heart rate without wearing a chest strap. In addition to counting steps and monitoring sleep, fēnix 3 HR uses heart rate to provide accurate calories burned information and quantify the intensity of your fitness activities.Measure Oxygen Levels and More During Exercisefēnix 3 HR watch is packed with additional training features to tell you about your form and fitness. The VO2 max estimator crunches data, including your running speed, beats per minute and heart rate variability to estimate the maximum volume of oxygen you can consume per minute. Track changes to see your fitness gains and to compare with your peers. Other fitness metrics include recovery advisor with a recovery timer and recovery check, plus a race predictor, which estimates your ideal finish time based on your current VO2 max number.