Polar H10 Heart Rate Monitor - ANT + , Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates - Works with Fitness apps, Cycling computers, Sports and Smart
Polar H10 Running Heart Rate Monitor | Sole Mate
Polar Verity Sense - Bracelet with Optical Pulse Sensor - ANT+ Dual Bluetooth - Pulse Sensor for Sports with Just One Button - Compatible with Peloton, Endomondo, Zwift and Others Amazon Exclusive :
Polar H10 Heart Rate Sensor with Bluetooth and ANT+ – Workout For Less