AutrefoisElf Smart Ring Gen 3 – Gold (Size 10), Health & Fitness Tracker with Heart Rate, Sleep and IP68 Waterproof

The AutrefoisElf Smart Ring Gen 3 is a gold, IP68 waterproof health and fitness ring that monitors heart rate, sleep, stress, SpO2 and activity with a free app and no subscription fee.

Compact and polished, the Gen 3 ring combines continuous biometric sensing with discreet wearability. It pairs with Android and iOS via the AutrefoisElf app to display heart rate, blood oxygen, sleep stages, stress trends, steps and 139+ sport modes. Designed for everyday wear, the ring ships in sizes 6–14 and is offered here in a gold finish (size 10). Charging is fast and battery life is tuned for multi-day use so you can leave it on through showers and workouts.

How accurate are the health and activity readings?

The Gen 3 uses a high-precision optical sensor suite that samples continuously while you wear it, producing trend-based metrics for heart rate, SpO2, sleep stages and stress. Readings are intended for wellness and tracking trends over time rather than clinical diagnostics.

• Continuous heart-rate monitoring with real-time updates in the app
• Blood oxygen (SpO2) spot checks and overnight estimates
• Sleep staging (deep, light, REM) with automatic overnight recording
• Step, distance and calorie estimates across daily activity

How does the ring fit into an active lifestyle?

The Gen 3 is IP68 rated, so it withstands showers, hand washing and pools. It supports over 139 sport modes and records step count, distance and calories to match common workouts. The ring’s lightweight profile and durable finish make it comfortable for running, gym sessions, yoga and swimming.

• IP68 waterproofing suitable for swimming and daily use
• 139+ sport modes including running, cycling, yoga and swimming
• Remote shutter for hands-free photos and quick controls
• 1-hour charge for 3–5 days active use (5–7 days standby)

What does the app show and is there a subscription?

The free AutrefoisElf app displays your daily metrics, sleep analysis, stress trends and activity history without recurring fees. Syncing is straightforward: pair once and view summaries, graphs and readiness scores directly on your phone.

• No monthly subscription; full features available in the free app
• Daily readiness and sleep recovery scores to help plan activity
• Historical charts for heart rate, SpO2 and stress levels
• Easy pairing with Android and iOS via Bluetooth

How do I choose the right size and care for the ring?

Measure your finger circumference and consult AutrefoisElf’s size chart or use the provided sizing kit for the most comfortable, sensor-accurate fit. The metal finish resists daily wear but avoid harsh chemicals to preserve the coating.

• Available sizes 6–14; this listing is size 10 in gold
• Use the included sizing kit before ordering for best performance
• IP68 protection allows normal water exposure; remove for heavy-duty chemicals
• Charge fully with the supplied cradle for optimal battery life

Who is this for? The AutrefoisElf Smart Ring Gen 3 suits people who want continuous, discreet tracking without subscription fees — from fitness enthusiasts who need swim-safe wearables to professionals seeking compact sleep and stress insights. Choose this model if you want a polished gold ring (size 10) that balances everyday style with multi-day battery life and broad activity support.