Polar H10 band

The Polar H10 is a highly accurate heart rate monitor that comes with a comfortable, machine-washable Polar Pro chest strap. Providing high-quality, interference-free electrical measurements, the Polar H10 is considered by many sources to be the most accurate heart rate monitor.
The Polar H10 connects and transmits data via Bluetooth®, ANT+™ and Polar GymLink (5 kHz), giving you multiple connection options when connecting to compatible sports watches, smartwatches or training apps. Two simultaneous Bluetooth connections are also possible. The Polar H10 also allows for group training without interference from other heart rate monitors.