This is the ring with an integrated heart rate monitor, pedometer, and stopwatch that simply and easily tracks activity during exercise. Devoid of uncomfortable chest straps and complicated operation, users simply slip this ring over a finger and press a button to measure heart rate (30-199 bpm), calculate steps taken (up to 99,999), calories burned, and workout duration. Data is displayed in easy-to-read numerals on the device’s LCD screen; it also provides visual and audio alerts should your heart rate fall outside your pre-set target range. The ring pairs via Bluetooth to a smartphone or tablet running a free app that lets you view data on your mobile device. The splash-resistant ring has an expandable rubber band that fits most fingers. Includes a belt clip case and an extra CR2032 battery. Blue. 1 1/4" H x 1" W x 1 1/4" D. (2 1/2 oz.)