Description
Used Circular brand "Circular Slim" model smart ring. Tracks a TON of things from heart rate, breathing rate, and temperature to sleep, heart rate variability, blood oxygenation, and stress (whatever that means). It charges on an included charger. Battery lasts about 1.5 days at a time. There are scratches on the palmar surface of the ring but it is not dented or otherwise damaged at all. It is a SIZE 6.5.