selling brand new unused Samsung galaxy ring men's size 11 it fits on index, middle, and Ring finger, box opened only for photo upload Ring is brand new!! Operating System Compatibility Android App Compatible Yes Built-in Storage 0.008 gigabytes Usage Time 144 hours Metrics Measured Blood oxygen, Cadence, Calories burned, Distance traveled, Duration of exercise, Duration of sleep stages, Hours slept, Respiration rate, Resting heart rate, Skin temperature Protective Qualities Water resistant