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circul+ now has overnight skin temperature, improved battery life and new sensors with improved metrics.

Sensor Stabilization Technology (SST)

Patented spring loaded medical devices ensure snug fit and sensors are always in place to accurately measure Medical grade metrics.  BodiMetrics circulTM smart ring product line utilizes this patented technology to deliver both FDA 510(k) cleared blood oxygenation in all skin tones but also in its consumer general wellness rings. No other smart ring can make these claims.

circul+™ Pulse Oximetry Wearable Technology Demonstrated Statistically Significant Correlation in Delivering Stable Oxygen Saturation Value in Dark-Pigmented Individuals

Link to circul+ Study and Results

Read US Senators Jan 2021 Letter to the FDA on the subject

WIRED: Oximeters Used to Be Designed for Equity. What Happened?

This problem can be addressed with better designed devices; CIRCUL is one such device.

The difference and importance of continuous monitoring of Spo2 vs episodic

“Devices that measure oxygen saturation continuously during sleep, every time the heart beats (roughly once a second), store the data, analyze the data, and make it available to examine and share with doctors are very useful in monitoring health. Episodic or spot measurements (once a minute or every 15 minutes or less often) may miss the times  oxygen levels change quickly during sleep in some conditions.” – Dr. Meir Kryger, MD, FRCPC

circul+ continuously monitors Spo2.

Both CIRCUL and circul+ use the "CIRCUL+" APP

circul+ is now FSA Eligible so you can use your pre-tax dollars to purchase the circul+ for day and night blood oxygenation monitoring while sleeping or awake!

What Doctors and Customers Say

Dr. Steve Friedman
Doctor of Internal Medicine and Doctor of Psychiatry

Dr. Chris Landon
Director of Pediatrics at Ventura County Medical Center

This little ring is great. It’s easy to use And easy to read. I would recommend it for anyone with a breathing issue. It’s really helped me to know precisely when to use an inhaler instead of guessing. The fact it stores the information  means I have a well organized comprehensive record of information over a period  of time to show my doctor at MSK.
The alarm and sleep mode has given me real peace of mind and the device is inconspicuous and does not impair comfort so when you are ready to sleep you can. The breakdown of my sleep cycles is information of which I never would have been aware if not for the CIRCUL. Unlike other devices on the market this one is a hospital grade with precise data and alerts that can be life saving.  The ease of use, accurate information , and unencumbered comfort makes the CIRCUL ring well worth the price tag.
– SLB, Greenwich, CT

5 Stars!
Excellent tool to monitor O2 saturation and CPAP performance. Super easy to use with useful and simple data to confirm your CPAP is working properly each night. Highly recommend! Comfortable ring, and I don’t like rings or jewelry generally.


5 Stars!
Your ring is outstanding, I have thoroughly enjoyed wearing it, it has helped me understand my sleep patterns and O2 intake. Given the risk posed by COVID it is nice having a baseline. Their customer service is best in class
Scott Mack

5 Stars!
I gave you 5 stars and a great review in 2 places so far prior to this development- I appreciate your continued dedication to our greater health! Thank you! I have read I recommended you to several in the medical field!
MJ Zapp

5 Stars!
I love my Circul. It determines the oxygen level in the blood during sleep. I am astonished how low O2 level drops. I do have sleep apnea and use a CPAP.

I have used the Circul wellness monitor for several years, and  I am not comfortable being without wearing the device.  Being diagnosed with sleep apnea, I receive notifications with an alarm that my blood oxygen is at low levels so that actions can be taken to rectify the problem. It provides me with a complete snapshot of oxygenation, pulse, temperature, and sleep stages with durations. The Circul is a great asset to prevent adverse health consequences by being a tool to help you accomplish your goals.  It’s also impressive how the company is always moving forward with updates to provide the latest monitoring advancements.  Impressive reliable customer service provides excellent support for their product and customers ***** A five-star rating from a long-time highly satisfied consumer.
– Dotty Harding

Sleep Statistics, Data and Facts

Sleeping 60 to 90 minutes more per night can make you happier and healthier.
– American Psychology Association

We dream 4-6 times per night but forget 95-99% of our dreams the next morning.
– G. William Domhoff

REM Sleep constitutes of 20% of our total sleep time while the remaining 80% are non-REM sleep stages.
– WebMD

Source: https://www.sleepadvisor.org/sleep-statistics/

Body Temperature Fluctuations GraphOur body temperature drops by 1-2 degrees during the night so it’s perfectly normal to feel a bit chilly.
– WebMD

Sleeping In a Fetal Position 54.1% of adults prefer to sleep in the fetal position while 37.5% sleep on their back, even though it’s the healthiest position.
– Nature and Science of Sleep

6-8% of the participants in one study reported a condition called “sexsomia” which means waking up in the middle of the night to get intimate with your partner.
– MDPI – Journal of Clinical Medicine