Track heart rate and heart-rate variability with the Garmin HRM 200 chest monitor in M-XL. It sends real-time data to compatible Garmin smartwatches and Edge cycling computers, compatible fitness equipment and apps. The M-XL strap is listed for chest circumferences of 80-119 cm.
A status light shows when the monitor is awake or its battery is running low. The battery is user-replaceable and rated for up to one year. Remove the module before machine-washing the strap. The monitor has a 3 ATM water rating.