This smart phone has a 1.65-inch AMOLED touchscreen, can go underwater up to 50m, has GPS built-in, a 15-day battery life, Bluetooth connectivity, and 0GB of internal memory. It also has PPG heart rate, ambient light, and geomagnetic sensors, plus an interchangeable bracelet for other colors (not included in the product). The battery life changes depending on how you use it.