Used Heart rate belts

Garmin HRM-Pro Plus

Garmin HRM-Dual

Garmin HRM-Fit

Polar H9 Size M-XXL

Suunto Smart Heart Rate Belt

Polar Verity Sense

Garmin Hrm-Swim

Polar Verity Sense

Polar H10 Size M-XXL

Polar H10 M-XXL

Polar H9 Size XS - S

Hammerhead Heart Rate Monitor

Sportstech Heart Rate Monitor sPulse Heart Rate Monitor with Wristband via Bluetooth & Sensor LED | Smart HRM

Polar H10 M-XXL

Polar Oh1