Tried and Tested Quality.Tested to the highest military standard of toughness (MIL-STD-810H), KOSPET TANK S1 is as robust as it is dynamic, enduring the rigors of some of the most demanding environments, ranging from majestic mountains to expansive deserts.Make Durability Appear Elegant.As the first-ever outdoor smartwatch designed specifically for women, KOSPET TANK S1 is made from 6xxx series aerospace-grade alloy and 316L stainless steel, making the smartwatch slimmer and more resilient. With 45mm and 48g in diameter and weight respectively, KOSPET TANK S1 is exceedingly easy and light to wear on so many levels.Tougher than Tougher.KOSPET TANK S1 harnesses the Corning® Gorilla® Glass 3 that is more durable even prior to chemical strengthening and has proven more resistant to damage, and 4× more scratch resistant than aluminosilicate glasses from other manufacturers.Explore New Wonder Underwater.KOSPET TANK S1 makes a reliable companion for your underwater adventures, as the smartwatch comes with 5 ATM and IP69K ratings for water resistance, which enables it to withstand pressures equivalent to a depth of 50 meters. Note: DO NOT wear the smartwatch in a sauna to protect its sealing effectiveness from water vapor.Mind-blowing Details at a Single Glance. With its 1.3-inch always-on AMOLED display framed to perfection by a circular bezel, KOSPET TANK S1 delivers a more colourful and clearer viewing experience by displaying everything with rich contrast and sharp details.An Active Leap Ahead.KOSPET TANK S1 assists you to enjoy every workout to your heart’s content, thanks to its presets for 70 sports modes, which includes trendy workouts in particular, such as yoga, HIIT, kickboxing, and cardio exercises.At Your Beck and Call.Bluetooth calling of KOSPET TANK S1 can be enabled simply with a switch, so that you won’t miss any important phone calls, text messages or notifications, even when you are occupied with work or in the middle of a workout session.Stay in Tune with Her Health.KOSPET TANK S1 helps understand her overall health and well-being through pregnancy or menstrual cycle tracking, with relevant data shown in detail in the App KOSPET FIT.Have a Sweeter Dream.KOSPET TANK S1 tracks your nightly sleep through major stages of sleep, including light sleep, deep sleep, and rapid eye movement (or REM), so as to present comprehensive insights into your sleep quality.Wear Your Heart on the Wrist.Powered by the advanced VP60 sensor, KOSPET TANK S1 monitors your heart rate and blood oxygen on a 24/7 basis, with real-time alerts whenever your heart rate strays from its normal range, not to mention other trustworthy statistics and advice for a more wholesome living.Next-level Battery Life.KOSPET TANK S1, which can be fully charged within 2 hours, allows you to wear it for days on end before another charging boost, or 2 to 3 days in AOD mode, 8 to 12 days for daily use, or as long as 50 days in standby mode.Boundless Style That’s Uniquely You.To complement its compact and delicate display, brand-new UI design, and a multitude of unique watch faces, KOSPET TANK S1 showcases styles that speak to your charisma from the wrist, whether during a workout or commute to work. KOSPET TANK S1 is available in four captivating colours – sprout green, moonlight white, sakura pink and space black.