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.

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Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life

Product ID: 722393173

Details

Battery cell composition
Lithium
Connectivity technology
Bluetooth
Operating system
Special features
Advanced
Wireless communication standard
Bluetooth

⌚8 days battery life

💧Water resistant up to 100m

📊Tracks 30+ biometrics

HK$3375

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered 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 Hong Kong.

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Description

💍 Elevate your wellness game—wear the future on your finger.

UNPLUG THRIVE - Up to 8 days of battery life means no daily charging interruptions—focus on living, not charging.
PRECISION FIT ZERO GUESSWORK - Size yourself perfectly with the Oura Ring 4 Sizing Kit and get credit towards your ring purchase.
TITANIUM TOUGH FEATHER LIGHT - Crafted from ultra-durable, lightweight titanium for comfort and resilience in any environment.
SEAMLESS STYLE MEETS SMART TECH - Discreet, sleek design fits every occasion, letting you track health without the bulk or buzz.
ALL DAY ALL NIGHT HEALTH INSIGHTS - Monitor sleep, heart rate, stress, activity, and women’s health with Smart Sensing tech adapting to you 24/7.

The Oura Ring 4 is a cutting-edge smart ring made from durable titanium, designed for 24/7 wear with water resistance up to 100 meters. It tracks over 30 biometrics including sleep, heart rate, stress, and women’s health metrics using advanced Smart Sensing technology. With up to 8 days of battery life and a sizing kit to ensure the perfect fit, it offers seamless health insights without interrupting your lifestyle.

Specifications

ASIN	B0D9WVBBZ4
Additional Features	Advanced Health Tracking
Age Range Description	Adult
Band Color	Black
Band Material Type	Stainless Steel
Battery Average Life	8 days
Battery Cell Type	Lithium Polymer
Battery Charge Time	80 minutes
Battery cell composition	Lithium Polymer
Best Sellers Rank	#947 in Electronics ( See Top 100 in Electronics ) #5 in Wearable Tech Rings
Brand	OURA
Built-In Media	Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable
Case Material Type	Stainless Steel
Closure Type	Slip On
Color	Silver
Communication Feature	Bluetooth
Compatible Devices	Smartphone, Tablet
Compatible Phone Models	All current iPhone models, all current Samsung Galaxy models, all current Android models
Connectivity Technology	Bluetooth
Connectivity technology	Bluetooth
Controller Type	Ring
Country of Origin	Estonia
Customer Reviews	4.0 out of 5 stars 8,360 Reviews
Display Type	Analog
GPS	No GPS
GPS Geotagging Functionality	No GPS
Human Interface Input	Unknown
Item Dimensions	24 x 24 x 8 millimeters
Item Dimensions D x W x H	24D x 24W x 8H millimeters
Manufacturer	Oura
Metrics Measured	Heart Rate, Sleep Duration, Activity, Stress, Heart Health
Model Name	JZ90-54217-14
Model Number	JZ90-54217-14
Operating System	Proprietary/Custom
Operating system	Proprietary/Custom
Shape	Round
Special features	Advanced Health Tracking
Sport Type	Fitness
Style Name	Modern
Supported Application	Fitness Tracker
Supported Satellite Navigation System	GPS
Target Audience	Men
Warranty Description	2 year manufacturer warranty
Warranty Type	Limited
Water Resistance Depth	100 Meters
Water Resistance Level	Water Resistant
Waterproof Rating	IP54
Wearable Computer Type	Smart Ring
Wireless Compability	Bluetooth
Wireless communication standard	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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HK$3375

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered 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 Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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