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The short answer · Balanced overview
Garmin Instinct 3 AMOLED (45 mm) leads the Balanced Bettr Score 68.1–61.2. The existing category models use the available evidence automatically; open the score details for sources and coverage.
Oura
Look beyond the ring itself. Compare the listed features and membership details, then check sizing and the current ownership terms at the source. The catalog specifies a listed weight of 0.12 oz and a manufacturer battery claim of up to 9 days.
Bettr Score · Balanced
61.2/100
Garmin
Keep the 1.77 in AMOLED version exact. The listed display, compatibility, and battery claims help you compare the ownership routine as well as the feature list. The catalog specifies a listed weight of 1.87 oz and a manufacturer battery claim of up to 18 days.
Bettr Score · Balanced
68.1/100
13 shared verified specifications. The Bettr Score uses the available evidence automatically; independent tracking accuracy is not inferred from sensor presence.
| Oura Ring 5 | Specification | Garmin Instinct 3 AMOLED (45 mm) |
|---|---|---|
$399 Manufacturer source · 2026-09-10US manufacturer reference price or launch MSRP; not a live retailer offer. | Reference price | $349.99 ✓ WinnerManufacturer source · 2026-10-18Manufacturer USD reference price retrieved 2026-10-18; taxes/shipping and conditional discounts excluded. |
smart-ring Manufacturer source · 2026-09-10 | Device typePersonal preference | smartwatch Manufacturer source · 2026-10-18 |
9 days Manufacturer source · 2026-09-10 | Advertised battery life | 18 days ✓ WinnerManufacturer source · 2026-10-18 |
0.12 oz ✓ WinnerManufacturer source · 2026-09-10 | Device weight | 1.87 oz Manufacturer source · 2026-10-18 |
328.1 ft Manufacturer source · 2026-09-10 | Water resistanceTie | 328.1 ft Manufacturer source · 2026-10-18 |
No Manufacturer source · 2026-09-10 | Built-in GPS | Yes ✓ WinnerManufacturer source · 2026-10-18 |
Yes Manufacturer source · 2026-09-10 | Continuous heart rateTie | Yes Manufacturer source · 2026-10-18 |
No Manufacturer source · 2026-09-10 | ECG capabilityNot enough data | Not stated / not applicable |
Yes Manufacturer source · 2026-09-10 | Blood oxygen sensingTie | Yes Manufacturer source · 2026-10-18 |
Yes Manufacturer source · 2026-09-10 | Temperature sensingNot enough data | Not stated / not applicable |
Yes Manufacturer source · 2026-09-10 | Sleep trackingTie | Yes Manufacturer source · 2026-10-18 |
No Manufacturer source · 2026-09-10 | On-device display | Yes ✓ WinnerManufacturer source · 2026-10-18 |
Yes Manufacturer source · 2026-09-10 | iPhone supportTie | Yes Manufacturer source · 2026-10-18 |
Yes Manufacturer source · 2026-09-10 | Android supportTie | Yes Manufacturer source · 2026-10-18 |
$5.99 / month Manufacturer source · 2026-09-10 | Required subscription | None ✓ WinnerManufacturer source · 2026-10-25Required fee for core device and Garmin Connect use is $0. Optional Garmin Connect+ premium features remain paid; this does not imply all services or features are free. |
Bettr Score
Oura Ring 5
61.2 / 100
Garmin Instinct 3 AMOLED (45 mm)
68.1 / 100
Evidence-based guidance · Balanced model
One Bettr Score, using the existing category and priority models. Complete comparable independent tests take precedence; otherwise verified published specifications supply the score. Evidence and coverage are shown in the score details. Scores stay fixed across opponents; compare them within the same product group.
Review Oura Ring 5’s score details, sourced features and compatibility for your needs.
Review Garmin Instinct 3 AMOLED (45 mm)’s score details, sourced features and compatibility for your needs.
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eBay — New
In stock · checked Oct 26, 2026
Price needs rechecking. Confirm at the retailer.
$299.95
Item + shipping · before tax
$299.95 + $0.00 shipping
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