Stay in the Zone, Every Step of the Way

Whether you're training for your first half marathon or tackling an ultra, this heart rate monitor provides the precision and insights you need to train smarter. An accurate reading helps you stay in the optimal zone, avoid overtraining, and get the most out of every mile.

High Precision for Smarter Training

Track every beat with pinpoint accuracy. The Pro Sensor X2 ensures precise heart rate monitoring, allowing you to adjust your effort in real time for maximum performance and recovery.

Dual Protocol + Universal Connectivity

Compatible with most monitoring apps via Bluetooth and ANT+, the Pro Sensor X2 seamlessly integrates with your favorite devices. Stay connected, no matter how you like to track your progress.

Built to Go the Distance

With a waterproof design, lightweight build, and long-lasting battery, the Pro Sensor X2 is ready to keep up with your toughest sessions. It even features independent data storage, so you’ll never lose your stats, even when running without your phone.

From heart rate to estimated calories, speed, and distance, the Pro Sensor X2 gives you the data you need to optimize every run. Stay ahead of the pack and Run Day Ready!