Fitbit (Google)
Fitbit Charge 6
$159.95Cheaper
Released 2023-10
Best Fitness Trackers · head-to-head
Fitbit Charge 6 vs Oura Ring 4
A sourced, side-by-side comparison. Fitbit Charge 6 is cheaper at $159.95. Every spec and price links to its source.
Oura
Oura Ring 4
$349
Released 2024-10
Which is better: the Fitbit Charge 6 or Oura Ring 4?
On the specs we track, they're closely matched. The Fitbit Charge 6 is the cheaper at $159.95.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Fitbit Charge 6 | Oura Ring 4 |
|---|---|---|
| US price | $159.95 | $349 |
| Brand | Fitbit (Google) | Oura |
| Released | 2023-10 | 2024-10 |
| Form factor | band | ring |
| Display | AMOLED 1.04in | — |
| Battery days | 7 | 8 |
| Gps | Yes | No |
| Spo2 | Yes | Yes |
| Ecg | Yes | No |
| Subscription required | No | Yes |
| Water resistance (m) | 50 | 100 |
| Release | 2023 | 2024 |
Sources — Fitbit Charge 6: androidauthority.com (verified 2026-06-15). Oura Ring 4: support.ouraring.com (verified 2026-06-15).
What's the difference between the Fitbit Charge 6 and Oura Ring 4?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Form factor: Fitbit Charge 6 band vs Oura Ring 4 ring
- Battery days: Fitbit Charge 6 7 vs Oura Ring 4 8
- Gps: Fitbit Charge 6 true vs Oura Ring 4 false
- Ecg: Fitbit Charge 6 true vs Oura Ring 4 false
- Subscription required: Fitbit Charge 6 false vs Oura Ring 4 true
- Water resistance (m): Fitbit Charge 6 50 vs Oura Ring 4 100
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Fitbit Charge 6
Three whitelisted testers (DC Rainmaker, TechRadar, Tom's Guide) field-tested the exact Charge 6. All praise sleep tracking and improved heart-rate accuracy at a low price, but the built-in GPS is the recurring flaw: reliable only when the strap is worn loose, which then hurts HR. Battery landed near six days. (3 sourced reviews, 3 lab-tested.)
Praised: Above-average sleep tracking, close to Oura-ring reference; Heart-rate accuracy genuinely improved over the Charge 5; Feature-packed (ECG, Google Wallet/Maps, HR broadcast) at a low $159 price.
Flagged: Built-in GPS drops out / won't lock when strap is worn snug; Tightness trade-off: loosening for GPS degrades heart-rate accuracy; Best HR features and advanced sleep data locked behind Fitbit Premium.
Oura Ring 4
Two whitelisted hands-on testers (TechRadar, Engadget) call the Oura Ring 4 the best smart ring, praising comfort, sleep tracking and the redesigned app. Both flag the mandatory $5.99/month subscription that paywalls essential features. In real-world use, TechRadar drained a Size 10 ring in about five and a half days of constant use with workouts, while Engadget regularly got seven days on the same size over two months of lighter use. (Numeric measured values were dropped because the digit forms did not literally appear in the source text; the battery claims survive within verbatim quotes.) (2 sourced reviews, 2 lab-tested.)
Praised: Best-in-class smart ring; comfortable, elegant titanium design; Highly accurate sleep tracking (near-polysomnography); Multi-day battery life in real use (roughly 5.5-7 days on a Size 10).
Flagged: Mandatory $5.99/month subscription paywalls essential features and hurts value; Automatic activity/workout detection is unreliable (false positives).