Device hub · Fitness rings · Desk research
Oura Ring 4 Ceramic
Ceramic is leftover Ring 4 sensing in a zirconia body: $399 sale / $499 list on 2026-09-19, sizes 4–15, typically 5–8 days, same paid membership.
Product images
Oura product photography stays on ouraring.com.
Credit: GadgetShowdown labeled placeholder (not an Oura asset). View official product image
Studio still only. Manufacturer press JPEGs are not hosted here. See the official product page for the real product photo.
In short
Ceramic is leftover Ring 4 sensing in a zirconia body: $399 sale / $499 list on 2026-09-19, sizes 4–15, typically 5–8 days, same paid membership. Buy it for the ceramic finish and the wide size run. Skip it if you want the smaller Ring 5, titanium weight, or no subscription.
Who it is for
- Buyers who want zirconia scratch-resistance / luster and still need sizes 4–5 or 14–15.
- Existing Oura members — membership is account-tied and continues on Ceramic.
- People who prefer the recessed 0.3 mm sensor dome and up to 7 days of onboard memory.
- iPhone or Android users on iOS 16+ / Android 11+ with Bluetooth 5.0.
Who should skip it
- Shoppers who want the thinner/lighter titanium Ring 4 or the 6.09 × 2.28 mm Ring 5.
- Anyone who will not pay Oura Membership after the complimentary month.
- People who need a no-subscription 10–14 day ring.
- Anyone treating leftover Ceramic as the current flagship — Ring 5 is the current Oura.
Key differentiators
- Zirconia exterior + titanium interior; same Smart Sensing as titanium Ring 4.
- Thicker/heavier than titanium Ring 4: 3.51 mm / 5.1–8.1 g vs ~2.88 mm / 3.3–5.2 g.
- Sizes 4–15 (Ring 4 kit). Ring 5 is 6–13 only.
- Store includes a ceramic polishing pad in the box.
Caveats
- Do not reuse titanium Ring 4’s 2.88 mm / 3.3–5.2 g cells on this SKU.
- Finish/size inventory “may vary” (support, 18 June 2026). Date the store.
- Oura Ring is not a medical device (General FAQs / Product Safety, 2026).
- This environment can flip Oura geo. 2026-09-19 later evening re-pull of ouraring.com/store showed Ceramic Midnight/Cloud at $399 / $499 list. An earlier evening pull on the same day had resolved Ring 5/4 to euros. A 4:20 PM ET re-pull flipped the /store grid itself to euros (Ceramic from €300.30 / €429). A ~4:45 PM ET re-pull showed the /store grid in US dollars again (Ceramic $399 / $499). US price cells stay on the same-day USD grid. Re-open the US shop on quote day.
- Product Safety: Ceramic does not require a Proposition 65 warning; titanium Ring 4 / Gen3 do.
Ring-category specs
Same rows on every ring page (Oura, Ultrahuman, RingConn, Galaxy Ring, Circular).
| Attribute | Value | Source / note |
|---|---|---|
| Materials | High-performance zirconia ceramic exterior; seamless titanium interior; recessed sensors 0.3 mm | Oura Ring 4 support compare table; store tech specs |
| Width | 7.9 mm | Oura Ring 4 support; ouraring.com/store/rings/oura-ring-4-ceramic |
| Thickness | 3.51 mm; recessed sensor dome 0.3 mm | Oura Ring 4 support compare table; store |
| Weight | 5.1–8.1 g depending on ring size | Oura Ring 4 support; store |
| Sizes | 4–15 (Ring 4 sizing kit — not the Ring 5 6–13 kit) | Oura Ring 4 support |
| Finishes | Store grid listed Midnight and Cloud at $399 / $499 US on 2026-09-19 evening. Tide and Petal have official URLs (/tide, /petal) but this evening’s fetch rendered Midnight page chrome without a distinct priced picker. Confirm live inventory. | ouraring.com/store; ceramic Midnight/Cloud/Tide/Petal URLs |
| Battery (OEM) | Typically 5–8 days (same Ring 4 claim) | Oura Ring 4 support; Ceramic storeOura: varies by size, settings, activity, battery age. |
| Charging (OEM) | Typically 20–80 minutes depending on starting charge | Oura Ring 4 support; Ceramic store |
| Charging case (OEM) | Size-specific charger + USB-C in the box. Not a Ring 5 travel case. | Ceramic store “What's Included”; General FAQs 2026-09-18 |
| Water resistance | 100 m / 328 ft. Ring 4 support: sauna and water sports, not diving. General FAQs / Product Safety: showering, swimming, recreational diving/snorkeling OK; not scuba; do not keep submerged over 12 hours. | Oura Ring 4 support; General FAQs 2026-09-18; Product SafetyCite the page. Do not flatten support “not diving” and FAQ “recreational diving” into one invented rule. |
| Sensors | Same Smart Sensing as titanium Ring 4: red + IR for SpO2; green + IR for 24/7 HR / HRV / respiration; digital temperature; accelerometer | Oura Ring 4 support compare table; Ceramic store |
| Sleep tracking | Detailed sleep analysis with membership; nighttime SpO2 via red + IR | Oura Ring 4 support |
| Activity / fitness | 24/7 HR; Automatic Activity Detection; dynamic activity goals (membership) | Oura Ring 4 support |
| App | Oura App (iOS / Android) | Ceramic store; Set up the Oura App |
| Subscription / data access | Oura Membership (US $5.99/mo or $69.99/year; 1 complimentary month for new members). Applies to Gen3 and newer — including Ceramic. | Oura Membership support 2026-09-08 |
| Phone platforms | iOS 16+ or Android 11+ with Google Play; Bluetooth 5.0 phone | Oura General FAQs / Product Safety |
| Wireless | Bluetooth Low Energy; EMF-safe; Airplane Mode; FCC certified | Ceramic store; Oura Ring 4 support |
| On-ring storage | Up to one week (seven days) — Product Safety groups Ring 4 with Gen3 | Oura Product Safety & Use 2026-06-19 |
| US price (dated) | $399 sale / $499 list (Midnight, Cloud) on ouraring.com/store, 2026-09-19 evening. Dedicated SKU URL ouraring.com/store/rings/oura-ring-4-ceramic flipped to €429 / €549 on the same pull. | ouraring.com/store (USD grid); ouraring.com/store/rings/oura-ring-4-ceramic (euro flip, 2026-09-19 evening)This environment can resolve Oura to euros. Prefer the US store grid for the US price cell. Do not invent a dollar midpoint from the euro page. |
| Price band | Leftover ceramic membership ring | Derived from dated US store |
| Announced | Ring 4 generation; support last updated 18 June 2026 | Oura Ring 4 support |
| Availability | Still listed on the Oura store 2026-09-19. Support: check store or authorized retailer; inventory may vary. Dedicated ceramic URL geo-flipped to euros on the evening re-pull. 4:20 PM ET re-pull: /store grid itself euros. Same-day USD cells kept. | Oura Ring 4 support; store; ceramic SKU URL |
Oura Ring 4 Ceramic extras
Unique to this line or SKU. Other rings keep the first table aligned and swap this extras list.
| Attribute | Value | Source / note |
|---|---|---|
| Versus titanium Ring 4 | Same sensing, charge, battery days, size run, and membership. Ceramic is zirconia, 3.51 mm, 5.1–8.1 g. Titanium hub: /rings/oura-ring-4/ | Oura Ring 4 support compare table |
| In the box | Oura Ring 4 Ceramic; size-specific charger; USB-C cable; ceramic polishing pad | ouraring.com/store/rings/oura-ring-4-ceramic |
| Sizing kit | Ring 4 kit: white sizers 4–15. Not the Ring 5 6–13 kit. | Oura Ring 4 support |
| Proposition 65 | Product Safety: Ceramic does not require a Prop 65 warning. Titanium Ring 4 and Gen3 carry the warning. | Oura Product Safety & Use |
| Latest listed firmware | Ring 4 firmware list applies: 2.12.0 (17 June 2026). No Ceramic-only firmware table. Firmware article last updated 17 June 2026; no newer Ring 4 build on the 2026-09-19 evening re-pull. | Oura Device Firmware Versions 2026-06-17 |
| Storefront currency flip | 2026-09-19 evening: /store grid USD $399 / $499 (Midnight, Cloud). Dedicated ceramic SKU page €429 / €549. 4:20 PM ET re-pull: /store grid itself euros (Ceramic from €300.30 / €429). Date both. US price cell stays on the same-day USD grid. | ouraring.com/store vs /store/rings/oura-ring-4-ceramic |
Overview
Ring 4 Ceramic is leftover Ring 4 sensing in zirconia: 7.9 × 3.51 mm, 5.1–8.1 g, sizes 4–15, typically 5–8 days, same paid membership as Ring 4 / Ring 5.
Sensors, sleep, and activity
Same Smart Sensing list as titanium Ring 4. Membership unlocks the same sleep / 24/7 HR / Stress / Heart Health / Women’s Health set.
Battery and charging
Typically 5–8 days; 20–80 minutes. Up to 7 days of onboard memory (Product Safety groups Ring 4 with Gen3). Size-specific charger + USB-C + polishing pad in the box.
App, subscription, and platforms
Oura App, iOS 16+ / Android 11+, US membership $5.99 / mo or $69.99 / year (support, 8 September 2026).
Price
US store 2026-09-19: $399 sale / $499 list (Midnight, Cloud). Re-check Tide / Petal and leftover stock.
Sources
- Oura store — Ring 4 Ceramic — accessed 2026-09-19
- Oura store — rings and accessories — accessed 2026-09-19
- Oura Member Care — Oura Ring 4 — accessed 2026-09-19
- Oura Member Care — Oura Membership — accessed 2026-09-19
- Oura Member Care — General FAQs — accessed 2026-09-19
- Oura Member Care — Product Safety & Use — accessed 2026-09-19
- Oura Member Care — Device Firmware Versions — accessed 2026-09-19
Frequently asked questions
Is Ceramic the same as leftover titanium Ring 4?
Same Smart Sensing, battery claim, charge window, sizes 4–15, and membership. Different shell: zirconia, 3.51 mm, 5.1–8.1 g, plus a polishing pad in the box. Do not copy titanium weight/thickness here.
Does Ceramic need membership?
Yes. Oura Membership applies to Gen3 and newer. Without it you only see the three daily scores, battery, profile, settings, and Explore.
Can I use a Ring 5 sizing kit?
No. Ceramic uses the Ring 4 4–15 kit. Ring 5 is 6–13 and “slightly different.”
Is it still for sale in the US?
The store we opened on 19 September 2026 still listed Midnight and Cloud at $399 ($499 list). Support says inventory may vary. Re-open the US shop before promising a cart.
Official product page: Oura Ring 4 Ceramic. Specs: Oura Ring 4 Ceramic specs.