# Oura Ring 4

The text version of the iDevice Guide at https://idevice.com/smart-rings/oura/roadmap/ring-4. Same data as the page, last updated 2026-09-29.

> Oura Ring 4 runs five to eight days, weighs as little as 3.3g and is rated to 100m. It launched at $349 and is discounting now that Ring 5 is here.

- Status: On sale
- List price: $349 (The maker's own starting price.)
- Released Oct 15, 2024 (source: [CNBC](https://www.cnbc.com/2024/10/03/oura-ring-4-price-release-date.html))
- Guide: https://idevice.com/smart-rings/oura/roadmap/ring-4
- Last updated: 2026-09-29

## Can it do this?

- **Do I need a subscription?** The ring and the app still work without one. Oura says the insights and health data you get are much more limited without a membership. It is the same $5.99 a month or $69.99 a year as on the current ring, and it is HSA and FSA eligible. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-do-i-need-a-subscription))
- **How long does the battery last?** Oura rates the battery for about 5 to 8 days per charge, so charging frequency can vary by several days. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-how-long-does-the-battery-last))
- **What does it cost?** The ring costs $349, and an Oura membership costs $5.99 per month or $69.99 per year in the United States. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-what-does-it-cost))
- **Does it read blood glucose?** No. Oura Ring 4 does not have a blood glucose sensor. Glucose tracking requires a separate compatible glucose sensor. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-does-it-read-blood-glucose))
- **Does it track sleep apnea?** It tracks breathing disturbances during sleep, but it does not diagnose sleep apnea. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-does-it-track-sleep-apnea))
- **Can it get wet — shower, pool, swimming?** Yes. Oura rates Ring 4 for water resistance to 100 meters, including showering and swimming. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-can-it-get-wet-shower-pool-swimming))
- **Does it work with my phone?** Yes. It works with iPhone and Android phones, so you are not locked to one phone platform. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-does-it-work-with-my-phone))
- **How heavy is it?** It weighs 3.3g to 5.2g depending on ring size, so larger sizes add some weight. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-how-heavy-is-it))
- **How does it connect?** It connects to your phone using Bluetooth Low Energy, a lower-power form of Bluetooth suited to a ring that runs for days. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-how-does-it-connect))
- **What colours does it come in?** It comes in Black, Brushed Silver, Gold, Rose Gold, Silver and Stealth. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-what-colours-does-it-come-in))
- **What is it made of?** It is made of titanium, while its weight stays between 3.3g and 5.2g depending on size. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-what-is-it-made-of))
- **What ring sizes does it come in?** It comes in US sizes 4 through 15. Oura recommends using the Ring 4 sizing kit because its sizing differs from standard rings and other Oura generations. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-what-ring-sizes-does-it-come-in))
- **How big is it on the finger?** It is 7.9mm wide, and the ring itself is offered in sizes 4 through 15. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-how-big-is-it-on-the-finger))
- **Does it track sleep stages?** Yes, it tracks your sleep stages. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#can-does-it-track-sleep-stages))

## Works with

- **Does Oura Ring work with Google Fit?** Doesn't work. Oura's Google Fit integration is no longer available. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/10786105824531-Health-Connect-by-Android-Integration). Checked 2026-09-21. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#q-google-fit))
- **Does Oura Ring work with Peloton?** With a limit. Works through Apple Health or Health Connect, not directly. Source: [Google (Android Developers Blog)](https://android-developers.googleblog.com/2023/08/health-connect-brings-together-peloton-oura-lifesum-for-deeper-health-and-fitness-insights.html). Checked 2026-09-21. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#q-peloton))
- **Does Oura Ring work with Samsung Health?** With a limit. Works through Health Connect, not a documented direct Samsung Health link. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/10786105824531-Health-Connect-by-Android-Integration). Checked 2026-09-21. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#q-samsung-health))
- **Does Oura Ring support water resistance?** Works. Water-resistant to 100 m, about 330 ft. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360025428394-Product-Safety-Use). Checked 2026-09-21.
- **Does Oura Ring support swimming, showering and sauna use?** Works. Swimming, showering, hot tubs and saunas are supported within Oura's water limits. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360025428394-Product-Safety-Use). Checked 2026-09-21.
- **Does Oura Ring work with Cronometer?** Works. Oura lists Cronometer as a partner integration. Source: [Cronometer](https://support.cronometer.com/hc/en-us/articles/360018579072-Devices-Integration-Overview). Checked 2026-09-21. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#q-cronometer))
- **Does Oura Ring support cycle and ovulation tracking?** Works. Cycle Insights works with membership, with Natural Cycles available as a separate option. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership). Checked 2026-09-21.
- **Does Oura Ring support sleep apnea diagnosis?** Doesn't work. It can't diagnose or provide a cleared screening for sleep apnea. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360038214494-Oura-Medical-Conditions). Checked 2026-09-21.
- **How does Oura Ring move to a new phone?** With a limit. Sync first, remove it from the old phone, then sign in on the new one. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360025592293-Transfer-Your-Oura-Data-to-a-New-Phone). Checked 2026-09-21. ([on the Guide](https://idevice.com/smart-rings/oura/roadmap/ring-4#q-phone-switching))
- **Does Oura Ring work in every country?** With a limit. Sales and membership activation are limited to supported countries. Source: [Oura](https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership). Checked 2026-09-21.

---

Source: iDevice (https://idevice.com). Every spec, rumor and grade above links to where it came from. Full Guide: https://idevice.com/smart-rings/oura/roadmap/ring-4. This file: https://idevice.com/guide-text/oura-ring-4.md.

## Questions and answers

### Using it

**Do I need a subscription?** A subscription is optional. Oura Membership costs $5.99 a month, and the first month is free. The ring still works without it, but the app then shows only your three daily scores. Membership adds sleep stages, HRV, body temperature and long-term trends. Source: Oura

**What does it cost?** It costs $349 to $499. That is the list price, before any subscription. Source: Oura

**Does it read blood glucose?** No, it has no glucose sensor. Source: Oura

**Does it track sleep apnea?** It watches for breathing disturbances while you sleep. It is a signal to act on, not a diagnosis. Source: Oura

**Does it work with my phone?** Yes, it works with an iPhone or an Android phone. Source: Oura

**How heavy is it?** It weighs 3.3g to 5.2g. The weight varies by size or finish. Source: Oura

**How does it connect?** It connects over Bluetooth. Source: Oura

**What colours does it come in?** It comes in 8 finishes. Black, Brushed Silver, Cloud (Ceramic), Midnight (Ceramic), and 4 more. Source: Oura

**What is it made of?** It is made of titanium. Source: Oura

**What ring sizes does it come in?** It comes in US sizes 4 to 15. Order a sizing kit first, because it is not the same fit as a jewellery ring. Source: Oura

**How big is it on the finger?** It is 7.9mm wide. Source: Oura

**Does it track sleep stages?** Yes, it tracks your sleep stages. Source: Oura

**Can I pay with FSA or HSA?** Yes, you can pay with FSA or HSA money. Source: Oura

### Sizing and fit

**What sizes does it come in?** Ring sizes 4 to 15. 7.9mm wide, 3.3–5.2g Source: Oura

### Battery and charging

**How long does the battery last?** It runs 5 days to 8 days. That is 120 to 192 hours. Source: Oura

### Water

**Can it get wet — shower, pool, swimming?** The maker has published no depth rating. We do not print a figure the maker has not stated. Source: Oura

### Price and models

**When did the Oura Ring 4 come out?** It went on sale October 15, 2024. Announced October 3, 2024. Source: iDevice

**Is there a newer one?** Yes: the Oura Ring 5, out June 4, 2026. Source: [iDevice](/smart-rings/oura/roadmap)

**How much does the Oura Ring 4 cost?** List price: $349. Other models: up to $499. Current price we last read at Amazon: $349, October 10, 2026. Source: [Oura](https://ouraring.com/store)

**What colors does it come in?** Black, Brushed Silver, Ceramic Cloud, Ceramic Midnight, Gold, Rose Gold, Silver, Stealth. Source: Oura

### Works with

**Does Oura Ring work with Cronometer?** Oura lists Cronometer as a partner integration. Works Source: [Cronometer](https://support.cronometer.com/hc/en-us/articles/360018579072-Devices-Integration-Overview)

**Does Oura Ring support cycle and ovulation tracking?** Cycle Insights works with membership, with Natural Cycles available as a separate option. Works Source: [Oura](https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership)

**Does Oura Ring support sleep apnea diagnosis?** It can't diagnose or provide a cleared screening for sleep apnea. Doesn't work Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360038214494-Oura-Medical-Conditions)

**How does Oura Ring move to a new phone?** Sync first, remove it from the old phone, then sign in on the new one. With a limit Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360025592293-Transfer-Your-Oura-Data-to-a-New-Phone)

**Does Oura Ring work in every country?** Sales and membership activation are limited to supported countries. With a limit Source: [Oura](https://support.ouraring.com/hc/en-us/articles/4409086524819-Oura-Membership)

**Does the Oura app support multiple languages?** The Oura app supports 21 languages, including English, Spanish and Japanese. Works Source: [Oura](https://support.ouraring.com/hc/en-us/articles/360058028053-Oura-App-Languages)