Measure the dimensions first before purchasing. There are 8 different inner diameter sizes, ranging from 16.5 mm to 22.3 mm. It is recommended to use the inner diameter at the thickest part of the knuckle as the purchasing standard. # 7 (inner diameter 17.4 mm) # 8 (inner diameter 18.2 mm) # 9 (inner diameter 19.0 mm) # 10 (inner diameter 19.9 mm) # 11 (inner diameter 20.7 mm) # 12 (inner diameter 21.5 mm) Multifunctional Smart Ring - 24-hour health monitoring to protect your health. Wearing it on your wrist, you can directly monitor heart rate, blood oxygen levels, and other indicators, and stay informed about your health status at any time. It also has multi-dimensional health management functions, such as sleep monitoring, to comprehensively improve your health level. Durable, lighter than ordinary wedding rings, hypoallergenic, and waterproof. Heart Rate Monitor â Utilizes advanced dynamic monitoring technology to accurately record your heart rate changes, allowing you to monitor your health status anytime, anywhere. App-initiated heart rate tests / All-day dynamic heart rate and data analysis / Heart rate data analysis / Heart rate measurement data for the past 7 days / Heart rate history data, these features constantly protect heart health. Sleep data monitoring and blood oxygen monitoring â Sleep monitoring records complete sleep data, providing insights into your sleep state and the ratio of light sleep and deep sleep throughout the entire sleep period. Good sleep habits are key to improving health. Easily measure blood oxygen levels. Blood oxygen saturation is one of the important indicators of heart health and can be quickly detected in real time. Exercise Index â Multiple exercise modes, including walking, running, cycling, etc. After exercising, by checking the exercise data in the app, such as exercise time, distance, heart rate changes, calorie consumption, etc., users can track their heart rate during workouts, understand their cardiovascular response, monitor intensity levels, and make informed decisions to improve their fitness results.11,12,8,9,10,7
