The Samsung SMR840NZSAXAR Galaxy Watch3 Smart 45mm Mystic Silver Watch combines style—two sizes, three colors, 50,000-plus watch faces and premium leather bands—with military-grade durability and water resistance. The Galaxy Watch3's long-lasting battery can go for more than a day on a single charge. And if you do need a sudden boost, simply place it on the back of a compatible Galaxy phone with Wireless PowerShare for a quick recharge. 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. Galaxy Watch3's automatic sleep tracker offers insights on how to get a better night's sleep. It also monitors your stress level and helps you recenter with breathing guides. Equipped with Bixby voice functionality can read your texts, make a call or initiate coaching on command and on-the-go. Samsung Pay lets you leave home without a wallet. And a multilayered defense-grade security platform keeps all your data safe.