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

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.

Oura Ring 4, Oura Ring 4 Charger, and USB-C Cable.

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.

Ring 4 Silver Size 7 Size Before You Buy

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

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¥96923

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In stock

Sold byAmazon JapanDelivered 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 Japan.

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Description

💍 Own your health, style, and edge — all in one smart ring.

DEEP HEALTH INSIGHTS - Track heart rate, sleep quality, stress, and activity with precision using 50+ advanced sensors.
TAILORED FIT STYLE - Multiple sizes and finishes plus a sizing kit ensure your perfect, personalized smart ring experience.
EFFORTLESS ALL DAY WEAR - Sleek titanium design that's lightweight, durable, and water resistant for your nonstop lifestyle.
SEAMLESS SMARTPHONE SYNC - Bluetooth-enabled app integration for real-time analytics and holistic health tracking on iOS & Android.
STAY AHEAD WITH READINESS SCORE - Know exactly when to push harder or recover with personalized daily energy and wellness metrics.

The Oura Ring 4 is a minimalist, titanium smart ring designed for professionals who demand accurate health tracking without compromising style. Featuring 8-day battery life, water resistance up to 100 meters, and over 50 biometric sensors, it delivers personalized insights on sleep, heart rate, stress, and activity. Compatible with iOS and Android, it syncs seamlessly via Bluetooth to provide a comprehensive Readiness Score, helping you optimize daily performance and recovery.

Specifications

ASIN	B0D9WW6RPJ
Age Range Description	Adult
Band Colour	Silver
Band Material Type	Stainless Steel
Battery Average Life	8 days
Battery Capacity	16 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Charge Time	80 minutes
Best Sellers Rank	571 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 2 in Wearable Tech Rings
Box Contents	Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable
Brand Name	OURA
Case Material Type	Titanium
Closure Type	Slip On
Colour	Silver
Communication Feature	Bluetooth® Low Energy
Compatible Devices	Smartphone, Tablet
Compatible Phone Models	Compatible with iOS and Android devices
Connectivity Technology	Bluetooth
Controller Type	Ring
Country of Origin	Estonia
Customer Reviews	4.2 4.2 out of 5 stars (8,778)
Display Type	No Display
GPS Geotagging Functionality	No GPS
Human Interface Input	Buttons
Item Dimensions	24 x 24 x 7 millimetres
Item Dimensions D x W x H	24D x 24W x 7H millimetres
Item Weight	0.19 Kilograms
Manufacturer	Oura
Memory Storage Capacity	4 GB
Metrics Measured	Optical Heart Rate Sensor
Model Name	Oura Ring 4 - Silver - Size 7
Model Number	JZ90-54217-07
Operating System	Android
Product Features	Heart Rate Monitor, Stress Monitor
Product Warranty	3 year manufacturer warranty
RAM Memory Installed	512 KB
Shape	Round
Style Name	Minimalist
Supported Application	Fitness Tracker
Supported Satellite Navigation System	GPS
Target Audience	Unisex Adults
Warranty Type	Lifetime
Water Resistance Depth	100 Metres
Water Resistance Level	Water Resistant
Wearable Computer Type	Smart Ring
Wireless Compability	Bluetooth

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.

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TrustScore 4.5 | 7,300+ reviews

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¥96923

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.