Chest belt works with most popular heart rate monitor and sensor, recognizes Compatible Device After First Usage
This chest strap is compatible with all heart rate sensors(ANT+, Bluetooth 4.0, 5.3K).
Made Of Soft Fabric: Nylon(80%) and Spandex(20%), soft elastic strap provides a comfortable fit.
Adjustable Sizing: Comfortable and adjustable elastic strap, wearing size between 23.6-47.2 inch.
The space of two snap button is 45mm, suitable for Polar Wahoo and Garmin,etc.