Amazon.com : COOSPO Heart Rate Monitor Armband HW807, Bluetooth 5.0 ANT+ HRM with HR Zone LED Indicator, Tracking Heartbeat HRV for Fitness Training, Work with Peloton/Polar/Wahoo/Strava/Zwift/DDP Yoga : Sports & Outdoors
Amazon.com : Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW), Black, XS-S: 20-26 inches (Renewed) : Sports & Outdoors