Apple
Apple Watch Series 10 (42mm)
$399
Released 2024-09
Best Smartwatches · head-to-head
A sourced, side-by-side comparison. Fitbit Sense 2 is cheaper at $299.95. Every spec and price links to its source.
Apple
$399
Released 2024-09
Fitbit
$299.95Cheaper
Released 2022-09
The Apple Watch Series 10 (42mm) wins 1 of the 1 specs we compare head to head; the other wins 0. The Fitbit Sense 2 is the cheaper at $299.95. Get the Apple Watch Series 10 (42mm) for the stronger spec sheet, the Fitbit Sense 2 to spend less.
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✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $399 MSRP, 42mm aluminum GPS | $299.95 MSRP, US launch price |
| Brand | Apple | Fitbit |
| Released | 2024-09 | 2022-09 |
| Case size (mm) | 42 | 41 |
| Display type | LTPO OLED | OLED |
| Battery hr | 18 | 144 |
| Gps | Yes | Yes |
| Lte option | Yes | No |
| Water resistance (m) | 50 | 50 |
| OS | watchOS 11 | Fitbit OS |
| Ecg | Yes | Yes |
| Weight (g) | 30 | 38 |
| Release | 2024-09 | 2022-09 |
Sources — Apple Watch Series 10 (42mm): dcrainmaker.com (verified 2026-06-15). Fitbit Sense 2: androidpolice.com (verified 2026-06-15).
Where the two actually differ on the specs we track (6 of 9). Matching specs are omitted.
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Four whitelisted testers (Engadget, Tom's Guide, TechRadar, DC Rainmaker) rate the Series 10 the best Apple Watch for iPhone owners, praising the thinner, lighter build and larger wide-angle display. All flag flat 18-hour battery life and the US-disabled Blood Oxygen app. Reviews are hands-on, not lab-benched; Engadget tested the 42mm while TechRadar and DC Rainmaker used 46mm units. (4 sourced reviews.)
Praised: Thinner, lighter, more comfortable build (9.7mm, ~10% lighter); Larger wide-angle OLED display, easier to read off-angle; Faster charging (80% in ~30 minutes).
Flagged: Same 18-hour battery life, no runtime improvement; Blood Oxygen app disabled in US (Masimo patent dispute); S10 chip delivers no noticeable performance gain over S9.
Three whitelisted reviewers who tested this exact model — Tom's Guide, TechRadar and Digital Trends — all praise its comfort and roughly five-to-six-day battery life. Tom's Guide and TechRadar flag the loss of third-party app support, and TechRadar additionally notes there is no music playback or control. Sensor accuracy is where they diverge: TechRadar found early-workout heart-rate readings unreliable, while Digital Trends judged the sensors to perform admirably. (3 sourced reviews, 3 lab-tested.)
Praised: Comfortable to wear for long periods; Long battery life, roughly five to six days between charges; Strong health tracking, continuous EDA stress sensor plus ECG.
Flagged: No third-party app support; Always-on display roughly halves battery to 2.5-4 days; No music playback or control.