The TICKR X is the ultimate heart rate monitor, capturing both motion and intensity to give you the most effective workout. It tracks heart rate, calorie burn, running analytics and more! It even has built-in memory for heart rate and calorie data, giving you the freedom to train without a phone. Equipped with Bluetooth and ANT+ dual-band technology, it connects to most smartphones, GPS watches and bike computers. TICKR X is compatible with most popular fitness apps, making it an incredibly versatile workout tracker for all of your activities. No other heart rate training platform can compete with the TICKR X. Period.