Heart monitoring watch

Garmin Fēnix 6X Sapphire

Fitbit Sense 2 Smart Watch - Blue Mist / Pale Gold Compatible ECG APP - Built-in GPS - 24/7 Heart Rate Tracking - Alexa Built-in - Oxygen Saturation Monitoring - Up to 6 day battery life

Fitbit Sense 2 Smart Watch - Lunar White / Platinum Compatible ECG APP - Built-in GPS - 24/7 Heart Rate Tracking - Alexa Built-in - Oxygen Saturation Monitoring - Up to 6 day battery life

Huawei Watch GT 4 46mm Smart Watch - Brown with Stainless Steel Case and Brown Leather Strap 1.43 AMOLED Display - Up to 2 weeks Battery Life - Built in GPS - 5 ATM Water Resistant - Heart Rate / Sleep / Stress Monitoring - Bluetooth Calls