Oura Ring 4 Smart Ring
Sensors: Red & infrared LEDs (SpO2), Green & infrared…
ULTRAHUMAN Ring AIR – Smart Ring
Sensors: PPG (heart rate, HRV, SpO2), 6-axis motion sensor…
Google Fitbit Air Screenless Activity Tracker
Sensors: Optical heart rate monitor, Skin temperature sensor, Sp02…
WHOOP 5.0/MG Health Sensor
Bluetooth : 5.3 Battery Life : Up to 14…
WHOOP 4.0 with 12 Month Subscription – Wearable Health, Fitness & Activity Tracker
Continuous health monitoring Sleep tracking and analysis Strain quantification…