Question: I need a smartwatch that can monitor my blood oxygen saturation levels and provide alerts for abnormal readings.

If you're in the market for a smartwatch that can track blood oxygen saturation levels and alert you to any irregularities, Zepp Health is an excellent option. Zepp Health has more advanced biometric sensors, including continuous blood oxygen monitoring through its OxyenBeats technology. Zepp's Digital Health Management Platform offers insights and personalized wellness advice to help you understand your health data and take proactive measures for preventive care.

Another contender is WHOOP, an all-in-one health and fitness tracker that also tracks blood oxygen levels. WHOOP converts your biometric data into personalized advice for daily routines, training and recovery. The device is geared for athletes and anyone trying to optimize sleep and recovery with real-time feedback.

If you're looking for a more integrated health and wellness approach, check out Gyroscope. Although it doesn't offer a smartwatch, Gyroscope uses data from popular wearables to track oxygen levels, sleep, heart rate and other health data and offers an overall Health Score and personalized coaching to help you reach your fitness goals and improve your overall health.