Ring sizing is the single most important factor in getting reliable numbers. The sensors need steady skin contact, so a ring that's too loose will drift and one that's too tight is uncomfortable for continuous wear. This listing is the Small, black size; if you're unsure, measure the finger you plan to wear it on at the end of the day when fingers are at their largest, and account for the slightly snug fit that keeps optical readings accurate.

The circul+ is battery operated rather than requiring a charging dock, which suits users who want dependable wear without remembering to top it up each night. It's designed for personal wellness monitoring and trend awareness — a helpful companion for caregivers keeping an eye on a loved one's vitals or individuals tracking their own numbers between clinic visits.

Looking after your health often goes hand in hand with keeping your environment clean and safe. Explore our broader range of PPE & Infection Prevention supplies and products from Infection Prevention Products Inc to round out your everyday wellness toolkit.