Waterproof Bluetooth Fitness Activity Tracker GW33-SE - IP67, Android, IOS, 180mAh, 1.3" Display Track your health during various activities now easily with this fitness activity tracker GW33-SE. A fantastic and multifunctional smartwatch can track your calories, sleep state, steps, and heart rate when holding it on your wrist. By connecting it to your phone device, you will also be allowed to make calls through the smartwatch, see the current weather, control the music on your phone, and other functions.