Smart ring activity tracker Rubicon RingConn Gen 2 — round, Silver, IP68, 12-day battery, 13.5 mAh, 18.2 mm, 3 g

Rubicon RingConn Gen 2 is a lightweight smart ring activity tracker in a round silver form factor with IP68 protection. Designed to monitor sleep, activity and key physiologic signals, the ring measures 18.2 mm in diameter, weighs approximately 3 g and uses a 13.5 mAh Li‑Ion battery with up to 12 days of runtime. The device connects via USB‑C for charging and pairs with modern Android devices using Bluetooth 5.0. Onboard sensors capture heart rate, blood oxygen (SpO2), skin temperature and respiratory-related metrics to provide a compact, continuous monitoring solution.

Advantages

The Rubicon RingConn Gen 2 combines a very small form factor and low weight with extended battery life and robust water resistance (IP68), enabling continuous wear during daily activities, exercise and sleep. Advanced signal processing and a dedicated MCU reduce power consumption while maintaining responsive monitoring. Built-in sleep apnea metrics, frequent blood oxygen checks and AI-driven analysis offer detailed night-time insights without requiring a subscription. The ring’s ergonomic geometry and award-winning exterior make it comfortable for prolonged use.

Suitable for

• Users seeking continuous sleep and recovery tracking, including sleep apnea metrics
• People who want a discreet activity tracker for daily steps, active minutes and heart rate monitoring
• Individuals who need a waterproof wearable for swimming, showering and exercise
• Users who prefer a low-maintenance device with multi-day battery life and USB‑C charging

Key specifications

• Form factor: round silver smart ring
• Protection rating: IP68 (water and dust resistant)
• Diameter: 18.2 mm
• Weight: ~3 g
• Battery type and capacity: Li‑Ion, 13.5 mAh
• Battery life: up to 12 days per charge (typical use)
• Charging: USB‑C (with charging case support)
• Wireless: Bluetooth 5.0 connectivity
• Sensors: optical heart rate, SpO2 (blood oxygen), skin temperature, respiratory/ apnea-related monitoring
• Monitoring frequencies: heart rate sampling approx. every 2.5 minutes; configurable blood oxygen monitoring
• Materials and design: ultra-thin ergonomic profile for comfortable all-day wear

How to use

Charge the ring using the supplied USB‑C charging case before first use. Install the RingConn app on a compatible smartphone and follow the on-screen pairing instructions to connect via Bluetooth. Wear the ring on a finger that provides a secure fit; the device is designed for continuous wear including during sleep and exercise. Open the app to view detailed sleep reports, apnea-related metrics, heart rate trends and activity summaries. Regularly sync the ring with the app to transfer stored data and keep firmware up to date.

Usage recommendations

For most accurate sleep and SpO2 readings, wear the ring snugly but comfortably during the entire sleep period and avoid loose placement. Charge the ring every 7–10 days under typical mixed-use conditions or whenever the app indicates low battery. Use the AI Health Partner features in the app to receive personalized insights and integrate data with Apple Health or Google Fit for consolidated tracking.