Garmin HRM Tri Heart Rate Monitor HRM Run 4.0 Heart Rate Swimming Running Cycling Monitor Strap - AliExpress
GARMIN Heart Rate Monitor HRM-Swim, 77,50 €
Garmin HRM-Pro Plus - Premium Chest Strap for Recording Heart Rate and Running Efficiency Values such as Step Rate & Ground Contact Time, Treadmill, ANT+ & Bluetooth Technology, Black : Amazon.co.uk: Sports
Garmin HRM-TRI Waterproof heartrate monitor for triathletes at Crutchfield