# Oura Ring 4 Smart Ring Ceramic Midnight Size 4 | Sleep, Activity, Women’s Health Tracking **Brand:** OURA **SKU:** se1688 **ASIN:** B0FKQW7HRF **Canonical URL:** https://crowcrowcrow.com/p/oura-ring-ceramic-midnight-size-sleep-activity-women-health-advisor-days-battery-life-se1688/se1688 **Category:** electronics **Subcategory:** Wearable Technology **Availability:** in_stock **Price (INR, all-inclusive):** ₹49,384 **Discount:** 14% **Customer rating:** 4.10/5 from 10 ratings ## Description Oura Ring 4 Ceramic Midnight (Size 4) tracks sleep, activity, stress, and women's health with Smart Sensing. Enjoy up to 8 days battery life and a comfortable fit. Imported from USA, delivered fast with all duties included. ## Highlights - Up to 8-Day Battery Life — Focus on your health without constant charging. The Oura Ring 4 provides 5-8 days of continuous tracking on a single charge, ideal for uninterrupted sleep and activity monitoring. - Comprehensive Health Metrics — Track over 50 health metrics including sleep stages, activity levels, readiness scores, stress, heart rate variability, and women's health cycles for a complete wellness picture. - Accurate Smart Sensing — Oura's Smart Sensing technology adapts to your body, delivering precise, continuous data day and night for reliable insights into your health trends. - Comfortable & Durable Design — Crafted from high-performance ceramic, the ring is designed for everyday wear with recessed sensors that are gentle on sensitive skin, ensuring comfort and durability. ## Key features - ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night - ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing - LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments - OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring - HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping ## Why choose this product - Advanced Health Insights from USA — The Oura Ring 4 Ceramic Midnight offers cutting-edge health tracking technology, directly imported from authorized US retailers. It provides over 50 detailed health metrics, including sleep analysis, activity tracking, readiness scores, and women's health insights. Smart Sensing ensures accurate, continuous data collection, adapting to your unique physiology. With a battery life of up to 8 days, it offers a seamless experience without constant charging. This imported device ensures you get the same advanced technology trusted by users worldwide, with all Indian customs duties and GST pre-paid for a transparent price. - Who It's For & Who Should Skip It — This ring is ideal for health-conscious individuals, athletes, and anyone seeking deep insights into their sleep, activity, and overall well-being. It's particularly beneficial for women tracking their cycles and for professionals managing stress. However, users who prefer standard US ring sizing should purchase the Oura Ring Sizing Kit first, as Oura's sizing is unique. Those sensitive to metal transfers on ceramic surfaces should exercise caution during certain activities or consider alternative materials. The Oura Membership subscription is required after the first month for full feature access. ## How to use 1. Use the Oura Ring 4 Sizing Kit to accurately measure your finger. Select the size that fits snugly but comfortably, as precise sizing is crucial for accurate data collection. — Determine Your Size 2. Charge the Oura Ring 4 using the provided charger. Once charged, download the Oura App on your Android or iOS device and sync the ring via Bluetooth to set up your account. — Charge and Sync 3. Wear the ring 24/7, including during sleep. The Smart Sensing technology will continuously collect data on your sleep, activity, heart rate, and more. The first month of Oura Membership is included. — Wear and Track 4. Open the Oura App regularly to view your personalized health insights, readiness scores, and trends. Use this data to make informed decisions about your sleep, activity, and recovery. — Analyze Insights ## Product details | Field | Value | |---|---| | Sensors | Recessed, Smart Sensing Technology | | Metrics Tracked | Sleep, Activity, Readiness, Stress, Heart Health, Metabolic Health, Women's Health, and 50+ others | | Membership Required | Yes (First month included, then {{ccc_offer_price}} per month) | | FSA/HSA Eligible | Yes | | Directions | Wear on finger, sync with Oura App via Bluetooth. Use Oura Ring 4 Sizing Kit to determine correct size before purchase. | | Reapplication Math | Continuous wear for up to 8 days on a single charge. | | Contraindications | Requires precise sizing via Oura Ring 4 Sizing Kit. Ceramic may show marks from metal objects; use caution with metal tools. | | Allergens / Common Irritants | Recessed sensors designed for sensitive skin. Ceramic material. | | Brand | Oura | | Model | JZ90-57455-04 | | Color | Midnight Ceramic | | Size | 4 (Requires Sizing Kit) | | Material | High-performance Ceramic Exterior | | Battery Life | 5-8 Days | | Connectivity | Android & iOS Compatible | | Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers | ## Attributes - **Unit count:** 1 ## Frequently asked questions ### How is this Oura Ring 4 authentic vs the version sold in Indian stores? This Oura Ring 4 is sourced directly from authorized US retailers, factory-sealed, and imported per-order. It is the same SKU and formulation US buyers receive. All customs duties and GST are included in the displayed price, with delivery typically within {{ccc_delivery_eta}} via ExpressBox tracked shipping. ### Will the Oura Ring 4 I receive match what is shown on the US retailer's page? Yes, orders are placed against the listed US retailer page at the time of purchase. Batch codes, packaging, and labels match what the US retailer dispatches. Photographs of every order are taken before international handover to ensure accuracy. ### What is the best smart wearable ring for Indian climate? The Oura Ring 4 Ceramic is designed for everyday wear and durability, suitable for various climates. Its advanced sensors track metrics like stress and sleep, which can be affected by heat and humidity, providing insights relevant to Indian conditions. ### Is Oura Ring 4 safe to use daily? Yes, the Oura Ring 4 is designed for continuous daily wear. Its recessed sensors are gentle on sensitive skin, and it tracks over 50 health metrics without screens or vibrations, allowing you to focus on your well-being. ### Are Oura Ring 4 wearable devices healthy? The Oura Ring 4 provides detailed health insights into sleep, activity, stress, and more, empowering users to make informed decisions about their well-being. It is not a medical device but offers valuable data for a healthier lifestyle. ### How to choose the correct Oura Ring 4 size? Accurate sizing is essential. You must use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing, as Oura Rings use unique sizing different from standard jewelry rings. ### How to use the Oura Ring 4? Wear the ring on your finger and sync it with the Oura App via Bluetooth. The app provides insights into your sleep, activity, readiness, and other health metrics. The first month of Oura Membership is included. ### What is the best Oura Ring 4? The Oura Ring 4 Ceramic Midnight (Size 4) offers a blend of refined elegance and cutting-edge technology, tracking over 50 health metrics with up to 8 days of battery life. ### Can I use Oura Ring 4 daily? Yes, the Oura Ring 4 is designed for 24/7 wear, including sleep and activity tracking. Its comfortable, recessed sensors and long battery life make it suitable for daily use without interruption. ### What are the Oura Ring 4 side effects? The Oura Ring 4 is designed with recessed sensors for comfort on sensitive skin. Some users may notice marks on the ceramic from metal objects; this is a metal transfer, not damage, and can be cleaned with the provided polishing pad. ### What are the Oura Ring 4 benefits? Benefits include detailed tracking of sleep, activity, stress, heart health, and women's health, with personalized insights and an AI advisor. It offers up to 8 days of battery life and a comfortable, durable design. ## Compliance {"wearable_technology":"This device is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. Always consult with a healthcare professional for any health concerns. Ensure correct sizing via the Oura Ring 4 Sizing Kit for optimal performance and comfort. Ceramic material may show marks from metal objects; use caution during certain activities."} ## Images 1. https://images.crowcrowcrow.com/B0FKQW7HRF-0.webp 2. https://images.crowcrowcrow.com/B0FKQW7HRF-1.webp 3. https://images.crowcrowcrow.com/B0FKQW7HRF-2.webp 4. https://images.crowcrowcrow.com/B0FKQW7HRF-3.webp 5. https://images.crowcrowcrow.com/B0FKQW7HRF-4.webp 6. https://images.crowcrowcrow.com/B0FKQW7HRF-5.webp --- Source: https://crowcrowcrow.com/p/oura-ring-ceramic-midnight-size-sleep-activity-women-health-advisor-days-battery-life-se1688/se1688 Returns: 30 days, free, by mail. Shipping: Free across India, 7–13 business days. Prices are all-inclusive (duties + GST).