Circular Slim Smart Ring
Elegant, High-performing Wearable
The Circular Ring Slim, which launched in November 2023, is now one of the thinnest (2.2 mm), lightest (2 grams), and most intuitive smart rings on the market as it is also the first to incorporate haptic navigation and alerts. Paired with Kira+, Circular’s AI wellness assistant, the sleek Circular Ring Slim assesses seven biometrics and 142 derived markers 24/7 to help people sleep better and live healthier lives. It’s designed to be used and worn constantly, providing a full circle of health information and delivering on the promise of proactive, personal health.
The smart ring has a three-axis accelerometer count that assesses activity and movement, a surface temperature sensor, and advanced photoplethysmography (PPG) sensors combining three different LED light wavelengths, green, red, and infrared, to capture a range of health vitals such as heart and respiratory rates, blood oxygen levels, and heart rate variability. It collects health data every two minutes to provide 15 times more health data than competitive trackers.
During the day, the ring captures activity, blood oxygen levels, energy levels, calories burned, heart rate, respiration rate, and chronotype, among other metrics, while at night, it ambiently tracks circadian rhythm and records sleep quality, heart rate variability, sleep disturbances, REM cycles, and sleep and wake times. Its sensors measure temperature variations during sleep, which, combined with other biometrics, can provide a clearer picture of immune systems and provide early detection of the onslaught of illness. Then, based on an in-depth analysis of a user’s parameters, chronotype, digital biomarkers, and health goals, Kira+ delivers personalized health recommendations and analyses tailored to individual users.
