* In contrast to Apple and most other brands, the ability to view blood oxygen saturation, thereby showing stats such as VO2 max and spot O2 readings * Measures heart rate very accurately without any other devices required. * Can be configured to monitor body energy level, suggest breaks, display respiration rate, steps, stairs, etc.

https://www.amazon.com/Garmin-Smartwatch-Touchscreen-Monitoring-010-02173-11/dp/B07WLN9RYD