Garmin Forerunner 165

Everyday running AMOLED iOS, Android 43mm, circle HRV, heart rate, respiratory rate, body battery, stress, activity level, menstrual cycle, calories burned, steps, naps, restless movements, sleep performance Running, cycling, swimming, hiking, racket sports Up to 11 days $250 Garmin Forerunner 965

Long-distance running AMOLED iOS, Android 47.2mm, circle HRV, heart rate, respiratory rate, body battery, stress, calories burned, steps, activity level, menstrual cycle, naps, restless movements, sleep performance Running, cycling, swimming, hiking, mountaineering, golfing, racket sports, rowing, kayaking, snow and winter sports Up to 23 days $600 Form Smart 2 Goggles

Swimming N/A (No screen) iOS, Android No screen Heart rate, calories burned Swimming (includes open water with in-goggle compass) Up to 14 hours $279 (plus $10/month subscription) Garmin Fenix 5

Hiking Color pixel iOS, Android 42, 47, or 51mm, circle Heart rate, resting heart rate, heart rate zones, recovery time, training load, fitness age, steps, stress, relaxation reminders, breathing timer, sleep, women’s health Cycling, swimming, hiking, climbing, mountaineering, mountain biking, skiing, snowboarding, stand-up paddle boarding, rowing, triathlon Up to 8 days $300 Apple Watch Ultra 2

Serious outdoor athletes and seamless iOS integration OLED iOS 49mm titanium case, rectangle Vitals, sleep tracking, heart rate, cycle tracking, noise, sleep apnea detection, ECG, fall detection, crash detection, blood oxygen monitoring, mindfulness Swimming, diving, running, cycling, hiking Up to 36 hours (normal), up to 72 hours (Low Power Mode) $800 Suunto Race S

Training and racing AMOLED iOS, Android 45mm, circle HRV, heart rate, respiratory rate, stress and recovery status, activity level, VO2 max, heart rate zones, calories burned, sleep Running, cycling, hiking, trail running, swimming, mountain biking, mountaineering, climbing, rowing, triathlon, free diving (up to 10 meters), snorkeling, surfing, snow and winter sports Up to 13 days $349 Polar H10 Heart Rate Monitor

Heart rate monitoring N/A (No screen) iOS, Android No screen Heart rate minimum, maximum and average, calories burned Used with any outdoor activity Up to 400 battery-powered hours $105 Whoop 5.0

Tracking sleep and recovery N/A (Screenless) iOS, Android No screen HRV, resting heart rate, recovery, respiratory rate, blood oxygen, body temperature, exercise and sleep performance Running, cycling, swimming, hiking, climbing, mountaineering, golfing, freediving, kayaking, racket sports, rowing, triathlon, snow and winter sports Up to 14 days $199 (plus membership) Google Pixel Watch 3

Outdoor movement AMOLED LTPO Android 41 or 45mm, circle HRV, heart rate, resting heart rate, respiratory rate, skin temperature, loss of pulse detection, sleep, daily readiness, activity tracking, calories burned, steps, cardio load, workout recommendations Walking, running, cycling, swimming, gym, rowing, tennis Up to 36 hours $350 Samsung Galaxy Ultra

Android users who want multi-day battery life, rugged design, and advanced health/fitness tracking Super AMOLED Android 47mm Physical readiness, heart rate, step, antioxidant index, vascular stress, body composition analysis Multisports, swim, hiking, biking, running, walking 100 hours (Power Saving mode), up to 48 hours (Exercise Power Saving mode) ~$650