Sizing and fit Recommended: the Sizing Kit before ordering the Smart Ring to determine the most comfortable, accurate fit for your finger. The Smart Ring is sized to the US ring standard. If you already know your US ring size, you can that same size. No subscription required Onetime gives you lifetime access to the companion health app. There are no subscription fees to download or use the app and no ongoing costs to access your realtime and historical data. Key health and sleep features Automatic sleep monitoring: the Smart Ring tracks when you fall asleep and wake up, and records sleep stages (deep and light sleep). View daily, weekly, and monthly sleep reports in the app to identify trends and improve habits. Continuous health monitoring: 24/7 measurements for blood oxygen (SpO2), heart rate, and blood pressure. Realtime readings and historical charts are available in the app so you can check your status anytime. Comfortable, lowprofile design you can wear overnight without noticing while it records sleep and biometric data. Activity and workout tracking Daily activity: automatic step counting, calorie burn, and distance tracking throughout the day. Multiple sport modes: choose running, cycling, skipping rope, walking, hiking, yoga, dancing, golf, and more. For chosen modes the app logs route (when applicable), workout duration, steps, heart rate, speed, calories burned, and distance to help you analyze performance. Battery and charging Ring battery life: typically 3–5 days on a single charge (about 2 hours to fully charge the ring). Portable charging case: included with a 400 mAh battery. The case can fully recharge the Smart Ring approximately 15 times, extending total use to roughly 60 days before the case itself needs recharging. The case is rechargeable, allowing repeated full recharge cycles for extended travel or outdoor use. Compatibility and performance Designed to match US ring sizing; pairs with the companion health app for realtime data and historical trends. Slim form factor intended for continuous wear (day and night) while delivering convenient access to health metrics and activity data. Practical use scenarios Business travel: keep continuous health and sleep tracking while on the road; use the charging case to extend monitoring for long trips without frequent charging. Fitness and training: switch sport modes for structured workouts (running, cycling, hiking) and use heart rate, calories, and route data to adjust training intensity. Sleep improvement: use nightly sleep stage and timing reports to identify patterns and implement changes for better sleep quality. What you get and how to Smart Ring with 24/7 monitoring (SpO2, heart rate, blood pressure), automatic sleep tracking, activity tracking, multiple sport modes, and the companion app. portable charging case (400 mAh) that provides about 15 full ring charges. Recommended: the Sizing Kit first to choose the correct US ring size for the fit and comfort. Note: The Smart Ring is intended to support wellness and fitness tracking. Use the app to view daily, weekly, and monthly data to make informed choices about activity, sleep, and health routines.