garmin instinct e supertough smartwatch 45 mm military spec 810 gps compass barometric altimeter electric lime with electric lime bandInstinct e is the supertough smartwatch that comes in 40 mm and 45 mm sizes, gets up to 16 days of battery life, and is available in black and charcoal or the bright limited edition tropical pulse collection. Instinct e includes essential features such as smart notifications and connect iq store compatibility. It also features 24 7 health and wellness tracking with wrist based heart rate, advanced sleep monitoring, pulse ox2 and more. With its high