Smart ring brandCircular  today launched the Ring Slim, its latest smart ring. The French wearables brand announced the health and fitness tracking ring, which builds on the original Circular Ring through upgraded hardware, new features, and an improved app for sports performance tracking. 

Circular is one of many smart ring brands vying for a spot in the increasingly competitive smart ring market. This ring positions the brand as offering wearables for athletes seeking fitness tracking features during workouts and activities, at-a-glance holistic health analysis, and progress-tracking functions.

Also:The best smart rings you can buy

With the Ring Sling, you can expect an algorithm that measures your heart rate during activities and then presents this data via the Sport Session Circle in the ring's app. "This new feature allows users to track their GPS route and analyze detailed performance metrics from their sporting activities, offering a comprehensive overview of their physical exertion and progress," Circular said in its press release. 

Circular also added an Advanced Analysis Circle feature to the Ring Slim, which gives you an at-a-glance view of health and wellness data collected by the ring. One graph includes all the sleep, activity, and wellness data for quickly understanding your health trends, improvements, and more. All these new features can be found in Kira+, the upgraded app that Circular announced in tandem with the Ring Slim. 

"The new Ring Slim, combined with the Kira+ app, offers a more dynamic and comprehensive approach to health and fitness tracking. With the support of elite athletes like Clint Capela and Romain Grosjean, we are confident that our users will be inspired to reach new heights in their personal fitness journeys," Circular co-founder Amaury Kosman said in a statement. 

Also: The best fitness rings for tracking activity 

You can buy the Ring Slim starting today for$281. Prices of competing wearables tend to be somewhat higher. For example, theOura Ring's Heritage Ring starts at$300 (plus its$6-per-month membership), theUltrahuman Ring Air costs$350, andRingConn's smart ring costs$279. 

We'll see just how well the Circular Ring Slim fares among the plethora of competitors when we get our hands on it ourselves. 

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