Smart ring activity tracker Rubicon RingConn Gen 2 — round silver, 21.5 mm, 3 g, 12-day Li‑Ion battery, USB‑C

Rubicon RingConn Gen 2 is a lightweight smart ring activity tracker in a round silver form factor designed to monitor sleep, heart rate, blood oxygen and daily activity. The device has a 21.5 mm diameter, weighs 3 g and houses a 13.5 mAh Li‑Ion battery delivering up to 12 days of runtime. The ring connects via Bluetooth 5.0 and includes a USB‑C cable for charging. It is water resistant to IP68 standards, enabling use during exercise, swimming and showering. The RingConn Gen 2 pairs with the RingConn App 3.0 to provide AI-powered sleep health tracking, comprehensive sleep apnea metrics and synchronized health summaries compatible with Apple Health and Google Fit.

Advantages

The RingConn Gen 2 offers continuous physiological monitoring with a compact and ergonomic design that minimizes weight and thickness while maintaining sensor performance. Advanced power management and an improved MCU reduce energy consumption to extend battery life up to 12 days while preserving frequent sampling for heart rate and blood oxygen. Built-in algorithms provide automated sleep apnea detection, SpO2 trends and actionable health summaries without mandatory subscriptions. The IP68 rating and low-profile shape make the ring suitable for day-to-day wear and water exposure.

Suitable for

• Users who need continuous sleep and sleep apnea monitoring
• People tracking daily activity, heart rate and active minutes
• Swimmers or users who want a water-resistant wearable
• Users seeking a discreet, low-weight wearable for 24/7 use
• Those who want seamless synchronization with Apple Health or Google Fit

Key specifications

• Form factor: round silver ring, ergonomic inside curve with squared outside profile
• Diameter: 21.5 mm
• Weight: 3 g
• Battery: 13.5 mAh Li‑Ion, up to 12 days runtime
• Charging: USB‑C cable included; quick charge support
• Wireless: Bluetooth 5.0 connectivity
• Sensors: optical heart rate and SpO2 sensors, skin temperature and motion sensors
• Water resistance: IP68 (suitable for swimming and showering)
• Sampling cadence examples: heart rate updates approximately every 2.5 minutes; configurable SpO2 frequency
• Compatibility: Android 8.0–12.0 and compatible mobile platforms via RingConn App 3.0; syncs with health platforms

How to use

Place the ring on a finger that fits comfortably and pair it with the RingConn App using Bluetooth 5.0. Charge the ring using the included USB‑C cable before first use. Wear the ring continuously for best results; the device performs automatic sleep and activity detection and uploads data to the app when in range. Use the app to view sleep apnea metrics (AHI, ODI, SpO2), heart rate trends, activity summaries and AI-generated health tips. Adjust sampling frequency and notification settings in the app to balance data granularity and battery life.

Usage recommendations

For accurate overnight sleep and SpO2 measurements, wear the ring snugly but comfortably on a stable finger (index or middle finger often provides consistent readings). Keep the ring and charging contacts dry and clean. Update the RingConn App and firmware regularly to ensure the latest algorithms and power optimizations. Consider charging the ring periodically during the day when convenient to maintain continuous monitoring without interrupting nightly data collection.