COLMI R02 Smart Ring, a Smart Ring for Women and Men, with a Charging case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, and Sports Tracking Ring, No Subscription Fee. (Rose Gold, 8#)

[Purchase a Sizing Kit] Before purchasing the COLMI Smart Ring R02, we recommend that you purchase the COLMI Sizing Kit to help you choose the right ring size.

[Heart Rate Measurement] 24/7 smart heart rate measurement allows you to understand your heart rate status and monitor heart rate abnormalities, keeping track of your daily health.

[Sleep Measurement] Detects falling asleep and waking up, monitors sleep quality and duration, and generates concise reports to help you understand your sleep patterns and adjust your habits for a more restful rest.

[Portable Charging Case] Includes a compact charging case for charging anytime, anywhere, without worrying about running out of power.

[Activity Tracking] Easily track steps, distance, and calories burned to motivate you to stay active every day.

[Photo Control] Remote camera control allows you to control your phone's camera with a flick of a finger, making selfies, group photos, and creative photography more convenient.

[Best After-Sales Service] Thank you for your trust and we provide professional after-sales service. If you have any usage or quality issues, please feel free to contact us. Included accessories: 1 smart ring, 1 portable charging case, 1 charging cable, and 1 instruction manual.