Comparison · Fitness rings · Desk research
Oura Ring Gen2 vs Oura Ring Gen3
Side-by-side manufacturer cells from the two named ring pages. Not a lab test. Brand grouping uses the published brand field (Oura).
Quick Answer
Oura Ring Gen2 vs Oura Ring Gen3 is a desk comparison of OEM cells (verified 2026-09-19 / 2026-09-19). Oura Ring Gen2: Not sold on ouraring.com/store (accessed 2026-09-19). Do not invent a leftover street ticket.. Oura Ring Gen3: Not sold on ouraring.com/store (accessed 2026-09-19). Do not invent a leftover street ticket.. Battery: Not published as a typical-days figure on Previous Generations or the current G… vs A fully charged Gen3 may last up to seven days (General FAQs / Ring Battery.
The verdict
Oura Ring Gen3 for new buyers on this Oura line; Oura Ring Gen2 if the leftover size, finish, or dated ticket is the fit
Why: Same brand (Oura). Oura Ring Gen3 ranks newer/current on this line. Cells are OEM quotes dated 2026-09-19 / 2026-09-19 — not a lab winner for comfort, accuracy, or real-world battery.
Buy Oura Ring Gen2 if
Owners who already have Balance or Heritage Gen2 and want an OEM-cited sheet.
Buy Oura Ring Gen3 if
Owners who already have Horizon or Heritage and want an OEM-cited spec sheet.
Specs side by side
Same rows as the two named ring pages. Values are copied from those pages — if a cell is unpublished or contradictory on the manufacturer page, it already says so.
| Attribute | Oura Ring Gen2 | Oura Ring Gen3 |
|---|---|---|
| Materials | Titanium with PVD (Gold, Silver) or DLC (Black, Stealth)Previous Oura Ring Generations (updated 2026-05-13) | Titanium with PVD (Gold, Silver, Rose Gold, Brushed Titanium) or DLC (Black, Stealth); non-allergenic, non-metallic seamless inner molding, BPA-freePrevious Oura Ring Generations (updated 2026-05-13) |
| Width | Not publishedsupport.ouraring.com Previous Generations | Not publishedsupport.ouraring.com Previous Generations |
| Thickness | Not publishedsupport.ouraring.com Previous Generations | Not publishedsupport.ouraring.com Previous Generations |
| Weight | Not publishedsupport.ouraring.com Previous Generations | Not publishedsupport.ouraring.com Previous Generations |
| Sizes | No standalone Gen2 size table on Previous Generations (accessed 2026-09-19)Previous Generations | No standalone Gen3 size table on Previous Generations. Product Safety lists a 15 mAh (US6) – 22 mAh (US13) Lipo battery for “Oura Ring” — do not treat that as a complete retail size run.Previous Generations; Product Safety 2026-06-19 |
| Finishes | Balance and Heritage models in Stealth, Black, Silver, or GoldPrevious Oura Ring Generations | Horizon and Heritage models in Black, Brushed Titanium, Gold, Rose Gold, Silver, or Stealth (matte black)Previous Oura Ring Generations |
| Battery (OEM) | Not publishedPrevious Generations; General FAQs 2026-09-18 | A fully charged Gen3 may last up to seven days (General FAQs / Ring Battery Tips)General FAQs 2026-09-18; Ring Battery TipsOura: varies by size, settings, activity, battery age. |
| Charging (OEM) | USB charger with white LED. General FAQs 20–80 minute window is not labeled Gen2-specific — do not assign it here without that label.Previous Generations; General FAQs | General FAQs charge window for “your Oura Ring” is 20–80 minutes. Gen3 charger: align sensor bumps opposite the charger light.General FAQs; Use Your Oura Ring Charger context |
| Charging case (OEM) | USB charger included with original sets. Oura: Gen2 charger is no longer available for purchase. Not a Ring 5 travel case.Previous Generations | Not publishedPrevious Generations; General FAQs 2026-09-18 |
| Water resistance | Not publishedPrevious Generations; General FAQs 2026-09-18 | General FAQs / Product Safety (current rings): 100 m; showering, swimming, recreational diving/snorkeling OK; not scuba; do not keep submerged over 12 hours. Previous Generations does not restate a Gen3-only water row.General FAQs 2026-09-18; Product Safety |
| Sensors | Infrared (IR) LEDs for nighttime heart rate and respiratory rate; accelerometers; negative temperature coefficient (NTC) sensorsPrevious Oura Ring Generations | Green + red + IR LEDs (daytime and activity HR); extra NTC temperature sensor; extra IR alignment sensor; accelerometersPrevious Oura Ring Generations |
| Sleep tracking | Nighttime resting heart rate, HRV, skin temperature, and respiratory rate (OEM software list). No SpO2 / 24/7 HR on this generation’s hardware list.Previous Generations | Detailed sleep analysis with membership; Blood Oxygen Sensing (SpO2) listed on the Gen3 software listPrevious Generations; Membership support |
| Activity / fitness | Steps and daily movement; automatic activity detection without location servicesPrevious Oura Ring Generations | 24/7 HR (daytime, nighttime, activity); Automatic Activity Detection; dynamic activity goals (membership)Previous Generations |
| App | Oura App (Gen2 feature set)Previous Generations; Membership support | Oura AppPrevious Generations; Set up the Oura App |
| Subscription / data access | Gen2 users do not require Oura Membership and will not be charged membership fees. Many newer features are not compatible. Upgrading to a newer ring requires membership.Oura Membership support 2026-09-08 | Oura Membership applies to Gen3 and newer (US $5.99/mo or $69.99/year; 1 complimentary month for new members). Some Gen3 accounts still show a legacy Lifetime Membership promo.Oura Membership support 2026-09-08 |
| Phone platforms | Current app floors on General FAQs: iOS 16+ or Android 11+ with Google Play; Bluetooth 5.0 phone. Confirm a live Gen2 still pairs before promising those floors.Oura General FAQs 2026-09-18 | iOS 16+ or Android 11+ with Google Play; Bluetooth 5.0 phoneOura General FAQs / Product Safety |
| Wireless | Bluetooth (firmware 4.0.8 notes BLE fixes). Exact radio version not restated on Previous Generations.Previous Generations; Firmware Versions | Bluetooth (app pairing). Exact radio version not restated on Previous Generations (accessed 2026-09-19)Previous Generations; General FAQs |
| On-ring storage | Not publishedProduct Safety & Use 2026-06-19 | Up to one week (seven days)Oura Product Safety & Use 2026-06-19 |
| US price (dated) | Not listed on ouraring.com/store, 2026-09-19. Official: no longer for purchase.Previous Generations; Oura store | Not listed on ouraring.com/store, 2026-09-19. Official: no longer for purchase.Previous Generations; Oura store |
| Price band | Discontinued no-membership ringDerived from Previous Generations + Membership support | Discontinued membership ringDerived from Previous Generations + empty store listing |
| Announced | Previous generation; Previous Generations article last updated 13 May 2026support.ouraring.com/hc/en-us/articles/360025570153 | Previous generation; Previous Generations article last updated 13 May 2026support.ouraring.com/hc/en-us/articles/360025570153 |
| Availability | Discontinued. Gen2 ring and charger no longer for purchase (Oura, 13 May 2026 article, re-opened 2026-09-19).Previous Oura Ring Generations | Discontinued. Gen3 ring and charger no longer for purchase (Oura, 13 May 2026 article, re-opened 2026-09-19).Previous Oura Ring Generations |
Oura Ring Gen2 hub notes
- No Oura Membership and no membership fees (Membership support, 8 September 2026).
- Night-only IR HR / respiratory rate — not the Gen3 green+red daytime stack.
- Balance and Heritage bodies; finishes Stealth, Black, Silver, Gold.
Gen2 is the last no-membership Oura: night-only IR HR, discontinued hardware, firmware frozen at 4.0.8 (18 October 2022). Keep it if you already own one and refuse a subscription. Do not buy one as a new US retail SKU — Oura no longer sells it.
Oura Ring Gen3 hub notes
- First Oura with daytime / activity HR (green + red + IR) and Cycle Insights NTC.
- Horizon (palm dimple) vs Heritage (flat on top) — wear orientation differs.
- Firmware still rolling in 2026 (3.4.3, 20 April 2026).
Gen3 is the last discontinued Oura that still takes membership software and firmware 3.4.3 (20 April 2026). Buy leftover only if you already own one. Skip a new purchase — Oura no longer sells the ring or its charger.
Sources
Union of the two hub source lists. Re-open the OEM URL, not this comparison, to refresh a cell.
- Oura Member Care — Previous Oura Ring Generations — 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
- Oura store — accessed 2026-09-19
Hub A: Oura Ring Gen2. Hub B: Oura Ring Gen3.