The Polar H10 is the most accurate sensor in Polar's history and is widely regarded as the gold standard for wireless heart rate monitoring. The H10 is designed for anyone who wants to monitor their heart rate with maximum precision and connect it to a wide range of training devices via Bluetooth and ANT+. It is the solution for all sports, even those where a smartphone or sports watch cannot be used. The Polar H10 heart rate sensor features built-in memory for a single training session, making it the ideal solution for training and sports where wearing a sports watch on the wrist is not allowed or data transmission cannot be guaranteed (e.g., swimming). The Polar Pro chest strap provides high comfort with an improved strap featuring an additional contact point and a new buckle. The optimized H10 heart rate sensor transmits your heart rate in real-time to your smartphone app, making it a smart training companion. The H10 can be used with all Polar products as well as compatible fitness devices.