8 Best Heart Rate Monitor Watches for 2026。Fitness Tracker- Smart Watches for Women Men with 24/7 Heart Rate Monitor O2. Fitness Tracker- Smart Watches for Women Men with 24/7 Heart Rate Monitor Blood Oxygen Sleep Tracker, Waterproof Fitness Watch, Activity Smartwatch for Android iPhone, Calorie Distance Pedometer, Gift Operating System-Android and IOS Special Feature-Time Display, Multisport Tracker, Sedentary Reminder, Activity Tracker, Notifications Connectivity Technology-Bluetooth Wireless Communication Standard-Bluetooth Battery Cell Composition- Lithium Polymer GPS-GPS Via Smartphone Shape-Rectangular ASIN-B0D983PY3Z Model Number-CS5 Fitness Tracker Built-In MediaFitness Watch, Metal and Silicon Watch Bands, Charging Cable, Instruction Wearable Computer TypeActivity Tracker Brand-AKUMAKA Model Name-CS5 Fitness Tracker Color-Pink and Rose Gold Band- Colorpink Compatible Phone Models-iOS Devices, Android Devices, iPhone Sumsung etc. Compatible Devices-iPhone, Samsung, Smartphone, Android Connectivity Communication Feature-Bluetooth Wireless Compability-Bluetooth Connectivity Technology-Bluetooth Display Display Type-LCD Screen Size-1.47 Inches Additional details Human-Interface Input-Touchscreen, Buttons Supported Application-Fitness Tracker, Find My Phone, Reminders, Alarm, Multisport Tracker Supported Satellite Navigation System-GPS Metrics MeasuredSleep Duration, Heart Rate, Calories Burned, Step Count, Blood Oxygen (SpO2) Case Material Type-Plastic Water Resistance Level-Waterproof