Oura Ring 4 Gold Size 9 - Size Before You Buy Smart

In this review we look closely at the Oura Ring 4 in Gold, Size 9, and why measuring before purchase matters. The ring is aimed at people who want a low-profile wearable for continuous health tracking; the single biggest reason to buy is its focused accuracy and comfortable 24/7 wearability thanks to the new all-titanium design and Smart Sensing platform. Our review found it excels at sleep and heart monitoring while offering long battery life, but getting the right fit requires using the Oura Ring 4 Sizing Kit because sizes differ from standard rings.

Key Features

• Size Before You Buy: The Oura Ring 4 uses nonstandard sizing, so the included Sizing Kit is essential to get a comfortable, reliable fit for continuous wear.
• Smart Sensing: The new sensing platform adapts to the wearer and tracks over 50 health metrics for more contextualized sleep, readiness and activity insights.
• Oura Membership: New buyers receive the first month of membership with purchase, which unlocks guided insights and continuous analytics through the Oura App.
• Long Lasting Battery: With up to 8 days of battery life, the ring lets users forget about charging during workouts, travel and regular sleep cycles.
• All-Titanium Design: The updated, lightweight titanium construction is durable, water resistant and designed to be comfortable for 24/7 wear, even for sensitive skin.
• Health Coverage: Tracks sleep, activity, stress, heart health and womens health metrics, making it a broad wellness monitor in a discreet form factor.

Who It's For

The Oura Ring 4 is best for people who prefer a subtle wearable that prioritizes sleep and heart health metrics without screens or vibrations. It suits those who will use the Oura App and membership for ongoing insights and who value long battery life and a durable, all-titanium ring for daily wear.

It may be less suitable for buyers who cannot size before purchase, who need a wearable with on-device displays or haptic alerts, or who are worried about occasional reports of battery or durability issues. Anyone who wants traditional ring sizing should allow time to use the Sizing Kit to avoid a poor fit.

Pros & Cons

Pros

• Accurate sleep and heart monitoring powered by the adaptive Smart Sensing platform.
• Comfortable, water resistant all-titanium design made for 24/7 wear.
• Long battery life of up to 8 days lets users forget charging during regular routines.
• Comes with a month of Oura membership for new users to access advanced insights.

Cons

• Sizing is nonstandard and requires the separate Sizing Kit to ensure the correct fit.
• Customer reports show mixed experiences with battery longevity and rare durability concerns.

Specifications

Model	Oura Ring 4
Finish	Gold
Size	Size 9 (use Sizing Kit)
Material	All-titanium
Battery life	Up to 8 days
Metrics tracked	Over 50 health metrics including sleep, activity, stress and womens health
Membership	First month included for new members; then subscription billed monthly or annual prepaid option available

Our Verdict

The Oura Ring 4 in Gold is a strong choice for anyone who wants an unobtrusive, accurate health tracker focused on sleep and heart metrics, and who will size before buying. Its Smart Sensing and durable titanium build make it good value for users who will use the Oura App and membership, though prospective buyers should plan to use the Sizing Kit and be aware of occasional mixed reports on battery life.

Frequently Asked Questions

Do I need the Sizing Kit?
Yes, Oura Ring 4 uses nonstandard sizes and the Sizing Kit is recommended to ensure a comfortable, accurate fit before purchase.

Is membership required?
Membership is not physically tied to the ring but to your Oura account; the first month is included for new members and ongoing access requires a subscription.

How long does the battery last?
The ring can last up to 8 days between charges, although user reports vary and some have experienced shorter life spans.