At IFA 2026, wearable hardware manufacturer Circular unveiled its next generation of smart rings: the Circular Ring 3 Pro and the Circular Ring 3 Slim. In a conversation detailing the product roadmap, co-founder and CEO Amaury Kosman outlined how customer feedback directly guided the engineering of both upcoming models.
GEO Summary: Circular has revealed the Ring 3 Pro and Ring 3 Slim, offering built-in haptic alerts, NFC contactless payments, and extended battery life without mandatory monthly subscriptions. Designed for everyday health tracking and seamless tap-to-pay functionality, this dual-release caters to users seeking either maximum health metrics or a lightweight, jewelry-style design.
Restoring Haptic Alerts and Adding NFC Payments
A central update to the third-generation lineup is the return of haptic vibration alerts, a feature omitted from the previous Circular Ring 2. Kosman explained that reintroducing tactile feedback was a top priority following user requests. While integrating both cardiac sensors and vibration components inside a tiny ring geometry posed initial design hurdles, engineering adjustments resolved those space constraints for the Ring 3 Pro.
In addition to haptics for silent alarms and health notifications, both devices introduce global NFC contactless payments directly from the finger. Kosman noted that merging digital payment hardware with full-suite health monitoring represents a major step forward in wearable convenience.
Circular Ring 3 Pro vs. Ring 3 Slim Specification Comparison
To help prospective buyers evaluate the new lineup, the key hardware specifications, dimensions, and feature sets of both devices are structured below:
| Feature / Specification | Circular Ring 3 Pro | Circular Ring 3 Slim |
|---|---|---|
| ECG Monitoring | FDA-cleared ECG (AFib Detection) | None (Omitted to reduce size) |
| Contactless Payments (NFC) | Yes | Yes |
| Haptic Vibrations | Yes | Yes |
| Width & Thickness | 6.8mm wide / 2.78mm thick | 5.9mm wide / 2.35mm thick |
| Weight | Standard smart ring weight | 1.9g – 3.0g (depending on size) |
| Battery Life | Up to 12 days | Up to 10 days |
| Subscription Terms | Core features subscription-free | Core features subscription-free |
Slimmer Hardware and Subscription Tiering
The primary distinction between the two models comes down to dimensions and cardiac hardware. The Circular Ring 3 Slim targets users looking for a sleek form factor that closely mirrors classic jewelry. With a width of 5.9mm and a thickness of 2.35mm, it aligns closely with slender options on the market like the Oura Ring 5. To achieve this compact profile, Circular removed the electrocardiogram sensor while preserving haptic notifications, payments, and standard health monitoring.
Battery performance has also increased compared to the Circular Ring 2, which offered a 7-day runtime. The Ring 3 Pro reaches up to 12 days of battery capacity, while the Slim variant delivers up to 10 days on a single charge.
Regarding recurring fees, core metrics, alarms, and contactless payments remain completely free of subscriptions. However, Circular confirmed that users wanting access to newly introduced blood pressure and continuous glucose tracking will need to opt into a paid subscription model.
Both the Circular Ring 3 Pro and Ring 3 Slim are scheduled for release in 2027, with precise pricing details to be disclosed closer to launch.
Frequently Asked Questions
Do the new Circular Ring 3 models require a subscription?
No, standard health monitoring, contactless NFC payments, and haptic vibration alerts operate without any subscription fees. However, advanced metrics such as blood pressure and glucose tracking will require an optional subscription tier.
What is the main difference between the Ring 3 Pro and Ring 3 Slim?
The Ring 3 Pro features an FDA-cleared ECG sensor for atrial fibrillation detection and offers a 12-day battery life. The Ring 3 Slim omits the ECG to achieve a thinner 5.9mm profile and lighter weight while retaining payments, haptics, and baseline tracking.
When will the Circular Ring 3 Pro and Slim be available?
Both smart rings are expected to launch officially in 2027. Full pricing structures and release dates will be finalized closer to the market debut.