Here are examples of wearables that utilize heart rate and respiratory sensors:

1. Apple Watch Series 8
   The Apple Watch Series 8 comes equipped with advanced heart rate and respiratory sensors that monitor your pulse and breathing patterns throughout the day. It provides real-time insights into your heart rate variability, as well as detailed reports on respiratory health. Additionally, it offers an ECG function that can detect irregularities in heart rhythms, helping users keep track of their cardiovascular health.

2. Garmin Fenix 7
   The Garmin Fenix 7 is a high-performance smartwatch that integrates heart rate and respiratory sensors to monitor cardiovascular and respiratory health during various physical activities. It offers advanced features like heart rate variability tracking and breathwork analytics to help users improve fitness performance and recovery. The watch also provides continuous monitoring of oxygen saturation, ensuring optimal health management during outdoor activities.

3. Fitbit Charge 5
   The Fitbit Charge 5 features heart rate and respiratory sensors that monitor your heart rate in real-time, ensuring optimal health tracking. The device uses these sensors to track your daily activity, workout intensity, and sleep quality. It also provides stress management insights by monitoring breathing patterns, helping users better manage their physical and mental well-being.

4. Whoop Strap 4.0
   The Whoop Strap 4.0 is designed for athletes and fitness enthusiasts and includes continuous heart rate and respiratory tracking. It provides real-time feedback on heart rate variability, recovery status, and respiratory rate to help users optimize performance and recovery. This wearable uses advanced algorithms to offer personalized coaching based on heart rate and breathing patterns, ensuring users stay on track with their fitness goals.

5. Polar Vantage V2
   The Polar Vantage V2 integrates both heart rate and respiratory sensors to deliver precise tracking during exercise and rest. It offers continuous heart rate monitoring, along with detailed insights into breathing efficiency and performance during workouts. The device helps users track their fitness progress and provides data-driven recommendations to improve endurance and recovery.

6. Samsung Galaxy Watch 5
   The Samsung Galaxy Watch 5 includes heart rate and respiratory sensors to track your cardiovascular health and monitor breathing patterns. It provides insights into your heart rate variability, stress levels, and sleep quality, allowing you to manage your health more effectively. The watch also features advanced workout modes and recovery tracking, making it ideal for athletes and fitness enthusiasts.

7. Oura Ring 3
   The Oura Ring 3 offers heart rate and respiratory sensors to provide continuous monitoring of your cardiovascular and respiratory health. It tracks heart rate variability, resting heart rate, and breathing patterns to provide insights into your overall wellness and recovery. The device is designed for people who prefer a discreet, non-invasive way to monitor their health metrics without a bulky smartwatch.

8. Suunto 9 Peak
   The Suunto 9 Peak includes heart rate and respiratory sensors to track your cardiovascular health during various outdoor and indoor activities. It provides real-time heart rate monitoring, along with advanced features like breathing rate tracking to help optimize your performance. The watch also offers recovery tracking to ensure that users are getting adequate rest between workouts.

9. Garmin Venu 2
   The Garmin Venu 2 uses heart rate and respiratory sensors to monitor your heart rate, respiratory rate, and overall fitness during workouts and rest. It tracks your breathing patterns in real-time, offering insights to optimize physical performance. The watch also provides detailed sleep tracking, ensuring users can understand their recovery and overall health.

10. Amazfit GTR 3 Pro
    The Amazfit GTR 3 Pro integrates heart rate and respiratory sensors to track your cardiovascular health and breathing during physical activity. It provides continuous heart rate monitoring and insights into your respiratory rate, helping users optimize their workouts and recovery periods. Additionally, it includes a SpO2 sensor to measure blood oxygen levels, ensuring comprehensive health tracking.

11. Withings Steel HR Sport
    The Withings Steel HR Sport is a hybrid smartwatch that includes heart rate and respiratory sensors to monitor cardiovascular and respiratory health. The device provides continuous heart rate tracking throughout the day and offers insights into your breathing patterns during exercise. It syncs with the Health Mate app, allowing users to track fitness, activity, and wellness metrics over time.

12. Whoop Strap 3.0
    The Whoop Strap 3.0 features heart rate and respiratory sensors that continuously monitor your cardiovascular and respiratory health. It provides advanced metrics such as heart rate variability and respiratory rate, which help athletes optimize their training, recovery, and overall health. The wearable delivers personalized feedback and recommendations based on your heart rate and breathing patterns, ensuring that you maximize performance and recovery.

13. Coros Pace 2
    The Coros Pace 2 includes heart rate and respiratory sensors that track your heart rate and breathing during exercise, providing detailed feedback on performance. It uses real-time data to help users optimize training intensity, breathing techniques, and recovery periods. The watch also integrates with the Coros app, offering users a comprehensive overview of their fitness and health metrics.

14. Huawei Watch GT 3
    The Huawei Watch GT 3 includes advanced heart rate and respiratory sensors to track heart rate and breathing patterns during daily activities and workouts. It monitors cardiovascular performance, breathing efficiency, and sleep quality, providing insights into overall wellness. The device also offers personalized workout recommendations and recovery tracking, ensuring optimal fitness and health management.

15. Xiaomi Mi Band 6
    The Xiaomi Mi Band 6 features heart rate and respiratory sensors to track your heart rate and breathing during physical activities. It provides real-time insights into your cardiovascular health and helps you manage your fitness goals. With its compact design and long battery life, it’s a convenient option for users looking for an affordable yet effective heart rate and respiratory tracker.

These wearables utilize heart rate and respiratory sensors to provide users with continuous and accurate monitoring of their cardiovascular and respiratory health. They help improve performance, manage recovery, and optimize overall well-being by tracking heart rate variability, breathing patterns, and other critical metrics.