iTouch Air 3 Smartwatch Fitness Tracker, Heart Rate, Step Counter, Sleep Monitor, Message, IP68 Swimming Waterproof for Women and Men, Touch Screen, Compatible with iPhone and Android (40mm) - Newegg.com
Amazon.com: SAMSUNG Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US Version, SM-R860NZDAXAA, Pink Gold : Electronics
Buy Apple Watch SE - Apple
Amazon.com: SAMSUNG Galaxy Watch 6 40mm Bluetooth Smartwatch, Fitness Tracker, Personalized HR Zones, Advanced Sleep Coaching, Heart Monitor, BIA Sensor for Health Wellness Insights, Big Screen, US Version, Gold : Everything Else