An Effective Method for Monitoring Exercise and More

  • The Circular Ring Slim is another addition to the increasing category of wearables that could substitute for a decorative ring.
  • The inconspicuous flat black design resembles a regular band, even though it’s a little broad for small hands.
  • After setup, you can wear the ring without your phone to monitor exercise, health data, and more.


Circular Ring Slim.

Lifewire / Jerri Ledford



The intelligent ring is the newest trending technology, and for good reason. A ring like the Circular Ring Slim that tracks your motion and bits of health data, even when your phone isn’t close by, is a beneficial tool.


All the hype these days seems to be about this newest category of wearables: the intelligent ring. So, when the chance to try the Circular Ring Slim came up, I was prepared to give it a try. After all, I use my iPhone and Apple Watch to monitor my steps, sleep, and more. If I could leave one or both of these devices behind, this could be a valuable tool.


What I discovered is that it is pleasant not to have to consider carrying a phone or wearing a watch, especially if you’re in the pool (the ring is completely waterproof), at the beach, or even just out for a quick walk, particularly since it has built-in AI to help you comprehend what you could be doing better.



Getting started with Circular Ring

The Circular Ring Slim is a small device that’s only about 8 mm wide and 2 mm thick, and not as heavy as you might expect a ring with a tiny computer in it might be, weighing only about 2 grams. It comes in a small box, very similar to what you might anticipate for a ring box, and is packaged with a USB charger. If you want a cable to charge it, you’ll have to order that separately.



Circular Ring Slim Packaging.

Lifewire / Jerri Ledford



Setting up the ring is simple. Just plug in the charger and place the ring on it (but make sure it vibrates, and you see the light on the charger light up. Otherwise, it’s not charging). Give it about 45 minutes to an hour to charge completely, and then you’re ready to start the setup process, which is as simple as scanning a code, installing the app, and setting up an account on that app.


Once you’ve completed that process, your Circular Ring Slim enters calibration mode. For the first four days, you need to keep your Circular Ring on the Performance data mode. Performance is the mode in which the ring collects the most data, but it also consumes the battery life like Cheerios.


Once the initial four-day period is up, you can switch your Circular Ring to Eco mode, which will give you several days of battery life before the ring needs to be recharged. Unfortunately, it also doesn’t capture as much data in some areas, like Sleep, so you won’t see as much detail in the tracking metrics. It’s a trade-off. Personally, I prefer the Performance mode, so I charge my ring daily while I’m at my desk doing sedentary work.


The complete calibration period for the ring is two weeks. This gives the tracking system and the onboard AI a chance to get to know your habits. To assist with this process, the AI, called Kira, will ask questions about your certain activities like your sleep habits, movement levels, and best times for productivity.



Circular Ring Slim Tracking Sensor.

Lifewire / Jerri Ledford




Tracking All the Things

Even while the Circular Ring Slim is in calibration mode you can use it to monitor tons of metrics. And the longer you wear the ring, the clearer your picture becomes for the metrics that are monitored. For example, Sleep Tracking gives you a good picture of your chronotype: how long it took you to fall asleep, how long you were in each state of sleep (light, REM, and deep), and the total number of hours you slept, including any deficit or overage based on your specific sleep patterns.


Other metrics that are monitored include active minutes, steps taken, calories burned, heart rate measurements, breathing measurements, blood oxygen rates, and much more. You can view these metrics in real-time, or as a trend over a 7-day period.


Also, once the calibration period is complete, Kira kicks in and starts to make suggestions for when the best time of day is for you to perform certain tasks, like consuming caffeine, eating, or focusing on intense tasks.



Circular App Screenshots.

Lifewire / Jerri Ledford



All this really only scratches the surface of what the Circular Ring Slim can do. One neat feature is the alarm clock and timer. The alarm clock has a Smart Alarm feature that will vibrate the ring to wake you from your lightest sleep in a given window of time. I find that using this feature helps me to wake up more easily and be less foggy when I do wake up.


My one disappointment with the Circular Ring is that it truly is just a tracking device. You can’t use it to alert you when you get an email, phone call, or text message, and because there’s no speaker, all the alerts you get are vibrations. There are also no buttons on the Circular Ring Slim (though there is a touch sensor for turning off alarms), so you also can’t control playback on audio on your phone.


Overall, though, for being a wearable and the way it’s intended to be used, the Circular Ring Slim does what you would expect it to do. It monitors your movement, sleep, and some health metrics. And it does it whether you have your phone in hand or not, and that alone has enough value to keep me wearing the ring.

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