Corofit R10 Smart Ring

To ensure maximum accuracy in biometric sensor readings, the ring should fit snugly but comfortably (neither too loose nor too tight).

1. Size Equivalents (Finger Circumference)

Find your finger circumference in millimeters and select your ideal size:

• Size #7: For fingers with 55.0 mm circumference (Internal diameter: 17.9 mm)
• Size #8: For fingers with 57.5 mm circumference (Internal diameter: 18.3 mm)
• Size #9: For fingers with 60.0 mm circumference (Internal diameter: 19.2 mm)
• Size #10: For fingers with 62.8 mm circumference (Internal diameter: 20.0 mm)
• Size #11: For fingers with 65.4 mm circumference (Internal diameter: 20.9 mm)
• Size #12: For fingers with 67.8 mm circumference (Internal diameter: 21.6 mm)
• Size #13: For fingers with 70.4 mm circumference (Internal diameter: 22.4 mm)

Note: All dimensions have a technical tolerance margin of ± 0.2 mm.

🔍 How to measure your finger in 4 simple steps

If you don't know your exact size, you can find it out at home in less than two minutes:

• STEP 1: Take a thin strip of paper or a fine thread that is not elastic, and wrap it around the base of the finger where you will wear the ring (we recommend the index finger for better sensor readings).
• STEP 2: Adjust the paper or thread so that it fits snugly around your finger, making sure it is neither too loose nor excessively tight.
• STEP 3: With a pen or pencil, precisely mark the exact point where the paper strip or thread overlaps.
• STEP 4: Straighten the strip on a table and measure the distance from the end to the mark with a millimeter ruler. That exact length in millimeters will be your circumference.

💡 Professional Tip: We recommend measuring your finger a couple of times at different times of the day to ensure the measurement is completely accurate, as temperature or physical exertion can cause fingers to vary slightly in size.