*FREE 3 DAY SHIPPING* . . *LIFETIME WARRANTY* . . Master the waters with The TANK. Introducing The TANK! This rugged smartwatch is perfect for anyone who wants to master the waters. With a hyper-durable aluminum titanium alloy frame. This watch is built to withstand just about any condition.  Inside the housing, cutting-edge biotechnology provides top-of-the-line biometric sensors so you can always stay aware of your body and monitor your performance. The TANK is the perfect watch for anyone who wants to push their limits. It has all the features you need to train in any environment, whether it's water or land.    Android and Apple IOS Bluetooth Compatible  Up To 20 Days of Battery Life Heart Rate Monitor O2 Oximeter Slowing Your Breath Feature Timer/Stopwatch Step Counter Waterproof/dive proof Up To 98.5 ft/ 30 meters Calorie Counter Current weather monitor Sleep Recovery monitor Magnetic charging cable LIFETIME WARRANTY