Every effort counts with the TICKR X. Designed to help you get the most out of any workout, the TICKR X tracks heart rate, calories burned, running analytics, and indoor cycling cadence. Equipped with Bluetooth and ANT+ technology, it connects to your favorite training apps, GPS watches, and bike computers, and now supports up to three simultaneous Bluetooth connections. It's new design makes it one of the lightest and slimmest heart rate monitors, plus the new integrated heart rate sensor and strap design provide a more secure connection and fit! TICKR X even has 50 hours of onboard memory for heart rate and calorie data, giving you the freedom to train device-free.