What does heart rate monitor do & how does it work on smart watch?
TELSA UK - Smart Watch Waterproof IP67 military style mens Sports & fitness digital Watch with Touch Screen display, Fitness Watch, Heart Rate, Step counter Smart Watch for men IOS & Android -
Akin M4 Smart watch, M4 Smart Bracelet, IP67 Waterproof Fitness Tracker Smart Bracelet Blood Pressure Heart Rate Monitor for Man and Woman(Black) : Amazon.co.uk: Sports & Outdoors
Fitness Tracker, Activity Fitness Watch with Heart Rate SpO2 Temperature Sleep Monitor, 1.1" AMOLED GPS Smart Watch with 25 Sports Modes, IP68 Sport Bracelet Calorie Counter Fitness Watch (Black): Amazon.co.uk: Sports &
veepoo Health Smart Watch with Heart Rate Monitor 24/7,Blood Oxygen,Sleep Monitor, Health&Fitness Tracker Watch for Heart Monitor, Calls & Texts Notification, 1.69'' Touch Screen,IP67 Waterproof: Amazon.co.uk: Sports & Outdoors
FORHAPAY Fitness Tracker Watch for Women Men Kids, Smart Watch with Heart Rate Blood Pressure Sleep Monitor and Message Remind, IP67 Waterproof Smartwatch with Calorie Step Counter for Android iOS: Amazon.co.uk: Electronics
Monitor your heart rate on your Samsung smart watch