Photo 1 of ** PARTS ONLY**. Topss Smart Ring, Fitness Sleep Health Tracker Rings for Men Women, No APP Subscription, Sleep Tracking, Heart Rate, Blood Oxygen, IP68 Waterproof (Black, 10#)

Double tap image to zoom

Photo 1 of ** PARTS ONLY**. Topss Smart Ring, Fitness Sleep Health Tracker Rings for Men Women, No APP Subscription, Sleep Tracking, Heart Rate, Blood Oxygen, IP68 Waterproof (Black, 10#)