Circular used IFA 2026 to announce two new smart rings, the Circular Ring 3 Pro and Circular Ring 3 Slim, according to Tom’s Guide. Both models are expected to launch in 2027, though Circular has not yet disclosed pricing or exact release dates. The shared pitch is a ring that combines health tracking with everyday utility. Tom’s Guide reports that both devices will support NFC contactless payments, haptic alerts, wake-up vibrations and health reminders. Circular co-founder and CEO Amaury Kosman told the outlet that bringing vibration alerts back reflected user feedback after the feature was removed from the Circular Ring 2. The Pro model is the higher-spec version. Tom’s Guide says the Circular Ring 3 Pro includes FDA-cleared electrocardiogram readings for atrial fibrillation detection, haptic vibration alerts and NFC payments. The Ring 3 Slim is described by Tom’s Guide as a smaller, lighter version that keeps contactless payments and essential health monitoring but does not include onboard ECG readings. Circular is also drawing a new line around subscriptions. Kosman confirmed to Tom’s Guide that both rings will remain subscription-free, but users will need to opt into a subscription for new blood pressure and glucose monitoring features. The report does not provide subscription pricing or detail how those monitoring features will work. The form-factor difference is specific. Tom’s Guide reports that the Ring 3 Slim is 5.9mm wide and 2.35mm thick, with weight ranging from 1.9g to 3g depending on size. The Ring 3 Pro is wider and thicker at 6.8mm by 2.78mm, which the outlet says is close to the current Circular Ring 2. Battery life also differs by model. The Ring 3 Pro is rated for up to 12 days, while the Slim is rated for up to 10 days, according to Tom’s Guide. Both would improve on the Circular Ring 2’s reported seven-day battery life. The product split reflects a familiar smart-ring tradeoff: sensors and battery life versus jewelry-like size. Tom’s Guide frames the Slim as part of a broader move by smart ring makers toward designs that look less like fitness trackers, noting the earlier launch of the Oura Ring 5. Kosman told the outlet that removing ECG was the main compromise needed to make the Slim smaller. One claim should be treated carefully: Kosman said Circular believes it is the first smart ring to combine payments and health tracking globally. That is Circular’s stated view as reported by Tom’s Guide, not independently corroborated by this cluster. Who benefits: Too early to tell for Circular. If the rings launch as Tom’s Guide reports, buyers would be choosing between a smaller model without onboard ECG and a larger Pro model with ECG. Who's exposed: Too early to tell. Tom’s Guide does not report pricing or exact release dates for either ring.