The TW64 Smart Bracelet is a Waterproof Sports Health Activity Fitness Tracker that pairs with your Smartphone to monitor , analyze and keep track of your fitness and health. It’s an advanced tracker that delivers continuous wrist-based heart rate activity tracking all-day, during workouts and beyond. Check your wrist 24/7 for steps, distance, calories burned, floors climbed and more to maintain workout intensity, achieve calorie burn goals, maximize performance and optimize health.