Before you buy, make sure to measure your finger circumference based on the instructions on the details page, then calculate the inner diameter and find your corresponding ring size.

The sleep monitoring feature helps you understand different sleep stages, including deep sleep, rapid eye movement sleep, light sleep, and wakefulness. This helps your body grow, repair, recover, and maintain itself.

The ring tracks your daily activities with high precision, including steps taken, distance walked, and calories burned. It also has different exercise modes, such as walking, running, and cycling, to encourage a more active lifestyle.

As a heart health consultant, the ring accurately monitors your heart rate and oxygen saturation 24/7. It analyzes the relationship between your activity and heart rate, giving you a comprehensive understanding of your physical condition.

The men's smart health ring is waterproof up to 164 feet, making it perfect for showering, working out in the rain, or even swimming. It's made of medical-grade 316 stainless steel for maximum comfort.

You can view your health tracker data on the mobile app for free, without any subscription fee. The app provides charts and graphs to help you monitor your activity and health progress. It supports Android 5.1 and iOS 8.0 and above.