How long should my ring work between charges?

Oura Ring 4 typically lasts 5-8 days on a full charge, depending on usage. Contact Oura Member Care if you have questions or concerns with battery life, and they will ensure your problem is resolved.

Oura Ring 4, Oura Ring 4 Charger, and USB-C Cable. Once you sync your ring in the Oura App, you'll be able to redeem a Ceramic Polishing Pad.

How do I choose the right Oura Ring size?

Using the Oura Ring 4 Sizing Kit, choose a finger for your ring. We recommend the index, middle or ring finger. Wear the sizer ring for 24 hours to ensure the fit is secure and comfortable over the course of your day.

How do I see my Oura Ring metrics?

After activating your Oura Ring, you can choose a monthly or annual membership to unlock full access to Oura’s features, daily health and wellness metrics, and personalized guidance.

Can I use more than one ring?

Oura Members can now connect more than one Oura Ring 4 to their Oura App and quickly switch between them. Note, this feature only supports wearing and syncing data from one active Oura Ring at a time.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Ring 4 - Smart Ring - Ceramic Midnight - Size 9 - Sleep, Activity, Women's Health, AI Advisor, Up to 8 Days of Battery Life, Oura App, Android & iOS Compatible

Product ID: 835986498

Details

Battery Capacity
18
Battery Cell Composition
Lithium
Brand
OURA
Connectivity Technology
Bluetooth
GPS
GPS Via
Operating System
Android iOS

⏳Up to 8 days battery life

💧Water resistant up to 100m

📊Tracks 50+ health metrics

₩1126628

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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Description

💍 Own your health, style, and future — the smart ring that’s always one step ahead.

STAY POWERED LONGER - Up to 8 days of battery life means less charging, more living—focus on your day, not your device.
DEEP HEALTH INSIGHTS - Monitor sleep, activity, stress, heart & women’s health with 50+ precise metrics powered by adaptive Smart Sensing.
SEAMLESS COMPATIBILITY - Works flawlessly with Android & iOS via Bluetooth, syncing your data in real-time through the Oura app.
TAILORED FIT GUARANTEE - Unique sizing system with a dedicated kit ensures your ring fits perfectly, unlocking the most accurate data.
EFFORTLESS ALL DAY WEAR - Sleek, lightweight ceramic design built for comfort and durability, perfect for your busy lifestyle.

The Oura Ring 4 Ceramic Midnight is a cutting-edge smart ring designed for professionals who demand precision and style. Crafted from durable ceramic, it tracks over 50 health metrics including sleep, activity, stress, and women’s health, powered by adaptive Smart Sensing technology. With up to 8 days of battery life, water resistance up to 100 meters, and seamless Android/iOS compatibility, it offers continuous, accurate insights without interrupting your flow. The unique sizing system ensures a perfect fit, making it the ultimate wearable for health-conscious millennials seeking data-driven wellness with a sleek, modern edge.

Specifications

ASIN	B0FKQXKVTQ
Additional Features	Lightweight
Age Range Description	Adult
Band Material Type	Ceramic
Battery Average Life	5 days
Battery Capacity	18
Battery Cell Type	Lithium Polymer
Battery Charge Time	80 minutes
Best Sellers Rank	#115 in Electronics ( See Top 100 in Electronics ) #2 in Smart Rings
Brand	OURA
Built-In Media	Charging Cable, Information Booklet, Oura Ring 4 Ceramic, Oura Ring 4 Charger, Quick Start Guide
Color	Midnight
Communication Feature	Bluetooth, GPS
Compatible Devices	Smartphone
Compatible Phone Models	Android Devices, iOS Devices
Connectivity Technology	Bluetooth
Customer Reviews	4.6 4.6 out of 5 stars (552)
Display Type	No Display
GPS Geotagging Functionality	GPS Via Smartphone
Human Interface Input	Buttons
Manufacturer	Oura
Metrics Measured	Body Temperature, Heart Rate, Menstrual Cycle, Sleep Duration
Model Number	JZ90-57455-09
Operating System	Android, iOS
Shape	Round
Style Name	Ceramic
Supported Application	Fitness Tracker, Sleep Monitor, Voice Control, Time Display, Messages, Social Media, Heart Rate Monitor, Pedometer, Reminders, Weather, Calendar, Music Player
Supported Satellite Navigation System	GPS
Target Audience	Unisex Adults
Unit Count	1.0 Count
Warranty Description	1 Year Manufacturer
Warranty Type	Limited
Water Resistance Depth	100 Meters
Water Resistance Level	Water Resistant
Wearable Computer Type	Smart Ring
Wireless Compability	Bluetooth
Wireless Provider	Unlocked

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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₩1126628

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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