Polar LoopDesigned to be worn 24/7, the Polar Loop helps you track all of your fitness activity. This smart bracelet monitors your daily exercise and sleep patterns, then provides instant motivational feedback and alerts to help you achieve your daily goal. The Polar Loop also provides guidance on how to improve health and well-being by making small, but significant changes to your daily activity. With the simple touch of a button, the Loop shows information about your activity goals and what you need to do to achieve it, as well as calories burned, steps taken, and the time of day. The Polar Flow app and web service provide additional analysis and guidance, including illustrative graphics that showcase cumulative daily activity and periods of inactivity. Waterproof design. Compatible with Polar H6 and H7 Bluetooth Smart heart rate sensors.