Circular Ring 3 Slim

The Ring 3 Shrinks Around the Essentials

The Circular Ring 3 Slim reduces the new lineup to a 5.9mm-wide, 2.35mm-thick band weighing as little as 1.9 grams. It is about a third lighter than the Pro model and easier to forget during sleep or all-day wear. A titanium exterior and biocompatible inner material keep the compact body comfortable against the finger.

Everyday Health Tracking Stays Aboard

PPG sensors follow heart rate, heart-rate variability, and blood oxygen, alongside sleep, activity, and skin temperature. The Slim leaves out the Pro's ECG and blood-pressure tracking, which is what allows the smaller dimensions. Circular's Kira app turns the recorded measurements into personalized wellness insights and recommendations.

A Tap Can Pay for Coffee

NFC support works with compatible Visa and Mastercard accounts, allowing contactless payment without reaching for a phone or watch. The ring also includes a vibration motor for silent alarms, medicine reminders, health alerts, and guided breathing. Those active functions give the Slim more daily utility than its basic sensor list might suggest.

Ten Days Before Wireless Charging

Circular rates the battery for up to 10 days, two fewer than the larger Pro but still longer than the outgoing Ring 2. The ring supports wireless charging, 50-meter water resistance, and sizes 6 through 14. It is expected in early 2027, with price and preorder timing still to be announced.