Battery Power Rating 340 Milliamp Hours Galaxy Watch3 combines powerful technology with a premium, customizable design so you can manage the day-today from your wrist, beautifully. Keep an eye on wellness with advanced health monitoring, and go for days without charging. - Galaxy Watch3 looks as good as you feel. - A battery built for overtime. Keep an eye on your fitness and health with SpO2, VO2 max, and heart-rate monitoring. Help is just a tap away if you stumble. And track your cycle in an easy and discreet way. Galaxy Watch3 combines style - two sizes, three colors, 50,000-plus watch faces and premium leather bands - with military-grade durability and water resistance. Spend your time moving while Galaxy Watch3 tracks seven popular activities automatically. Get more out of each movement thanks to a built-in run coaching.