Smart Sleep Tracking Ring Smart Sleep Tracking Ring helps you follow nightly rest and everyday movement without wearing a bulky watch. Its finger-worn sensors and connected mobile app are designed to record sleep patterns, heart-rate trends, steps, estimated calories and daily activity for convenient wellness review. Choose silver or black and select the correct ring size for close, comfortable sensor contact. Five activity modes support walking, running, cycling, hiking and golf, while gesture control can trigger a compatible phone camera through the app. Why You’ll Like It Lightweight, screen-free design for day and night wear Sleep-duration and activity trend tracking Heart-rate and blood-oxygen wellness estimates Step, distance and calorie estimates Compatible with supported iPhone and Android devices Remote smartphone-camera control Multiple finish and size options Wear the Smart Sleep Tracking Ring snugly with its sensors against the palm side of your finger. All readings are intended for fitness and general-wellness awareness only. Do not use blood-pressure, oxygen, heart-rate or sleep information for diagnosis, medication decisions or emergency monitoring.