R20 Ceramic Smart Ring 2025 | NFC, Heart Rate & Sleep Tracker

R20 Ceramic Smart Ring 2025 — Ultra-Thin Health & Fitness Tracker for Men & Women

Meet the R20 Ceramic Smart Ring — a sleek, featherlight wearable (just 5g!) that keeps your wellness stats and daily activity at your fingertips, literally. Crafted from premium ceramic and engineered for everyday life, this ultra-thin smart ring delivers continuous monitoring of your heart rate, blood oxygen levels, sleep quality, and activity data — all without the bulk of a traditional smartwatch.

Whether you're hitting the gym, winding down for the night, or simply going about your day, the R20 works quietly in the background, syncing rich health insights to your smartphone app so you always know how your body is doing.

Made in Mainland China.

✦ Key Features

• Comprehensive Health Monitoring: Tracks heart rate, blood oxygen (SpO₂), and blood pressure in real time with a high-accuracy Goodix GH3018 sensor (static heart rate accuracy >98%).
• Advanced Sleep Insights: Precise sleep algorithm automatically detects sleep stages and provides personalized sleep coaching reminders.
• 8 Sports Modes: Running, cycling, skipping, hiking, mountaineering, yoga, golf, and dancing — with accurate step count, distance, and calorie data.
• NFC Support: Convenient NFC functionality for access control and quick interactions.
• IP68 Waterproof (5ATM): Fully sealed against water — wear it in the pool, the shower, or the rain without a second thought.
• Ultra-Long Battery Life: Up to 3–5 days of active use or ~45 days standby on a single charge; fully recharged in just 30 minutes via included charging case.
• Remote Camera Control: Use a shake gesture in the companion app to snap photos hands-free.
• Family Care: Add friends/family within the app to stay connected and monitor loved ones' wellness trends.
• Broad Compatibility: Works with Android 5.1+ and iOS 8.0+.
• CE & FCC Certified for quality assurance.

✦ Technical Specifications

✦ The Perfect Gift

Beautifully minimal and gender-neutral, the R20 Ceramic Smart Ring makes a thoughtful gift for birthdays, weddings, anniversaries, or any occasion. Its jewelry-like appearance means it looks as good as it performs.

✦ Getting Started

1. Upon receiving your ring, charge it using the included charging case for at least 2 hours before first use.
2. Scan the QR code in the included manual to download the companion app.
3. Pair via Bluetooth, set your profile, and start tracking immediately.

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✦ Learn More About Wearable Health Tracking

Want to understand how wearable devices monitor wellness metrics like heart rate and blood oxygen? Visit the FDA's Digital Health Center of Excellence for trusted information on wearable health technology.

Frequently Asked Questions

Q: Is the R20 Ceramic Smart Ring compatible with both iPhone and Android devices?

A: Yes! The R20 smart ring is compatible with smartphones running Android 5.1 or higher and iOS 8.0 or higher. Simply scan the QR code in the manual to download the companion app and connect via Bluetooth.

Q: How waterproof is the R20 smart ring — can I wear it swimming?

A: The R20 carries an IP68 waterproof rating and 5ATM water resistance, making it suitable for swimming, showering, and general water exposure. It is designed to withstand submersion in water, so daily wear in wet conditions is no problem.

Q: How long does the battery last and how do I charge it?

A: The ring offers approximately 3–5 days of active working time and up to 45 days of standby time. It charges in just 30 minutes using the included magnetic charging case, which itself holds a 155mAh battery for on-the-go top-ups.

Q: What size smart ring should I choose?

A: The R20 is available in sizes 8, 9, 10, 11, and 12 (standard US ring sizes). We recommend measuring your finger circumference or visiting a local jeweler to determine your exact ring size before purchasing for the best fit and most accurate sensor readings.

Q: Does the R20 ring really support NFC access control?

A: Yes, the R20 Smart Ring includes NFC functionality, enabling it to interact with NFC-enabled access control systems and compatible devices. This feature is a highlight of the 2025 model and makes it a versatile everyday carry for both wellness and convenience.