Features: ?MEASURE YOUR SIZE: US ring size #9, ensuring all-day comfort. ?HEALTH MONITOR AT YOUR FINGERTIPS: This smart ring for women and men is an all-in-one health tracker, measuring heart rate, blood oxygen levels, activity, and sleep patterns right from your finger with this compact fitness tracker ring. ?ALL-DAY ACTIVITY TRACKING: Motivate an active lifestyle by monitoring steps, distance, calories burned and more throughout the day while you go about your routine. ?REMOTE PHOTO CONTROL: After enabling the remote photo function on the app, just shake the finger wearing the ring to take photos remotely. Smart rings are a fusion of art and technology that provide a comfortable, seamless experience. This is an ideal gift to make your loved one feel special and appreciated. ?LONG BATTERY ON A SINGLE CHARGE: Get up to 5-7 days of use from a single 2-hour charge thanks to efficient battery management and an 18mAh battery. Specification: Material: stainless steel System Compatibility:For Android 5.0 and above;For I0S10.0 and above Working Market: 3-7 days approx. Charging method: Use the equipped charging cable (USB rated 5V) Connection: Bluetooth 5.0 Waterproof rating: IP68 Package Included: 1*Smart Ring 1*Charging Cable 1*User Manual