Amazon.com: Garmin fenix 6 Sapphire, Premium Multisport GPS Watch, Features Mapping, Music, Grade-Adjusted Pace Guidance and Pulse Ox Sensors, Carbon Gray DLC with Black Band : Electronics
Amazon.com: Polar Pacer Pro - Advanced GPS Sports Watch, Wrist Heart Rate Monitor, Smart Watch for Men and Women, Workout Running Watch, Training Program & Health Recovery Tools, Sleep Monitor & Activity