Fitbit Sense 2 vs Samsung Galaxy Watch Ultra
Side-by-side specifications, scores and verdict.
Quick Verdict
Fitbit Sense 2 delivers solid health tracking and everyday smartwatch functionality at an accessible price point, featuring ECG, SpO2, skin temperature monitoring, and reliable 6-day battery life. Samsung Galaxy Watch Ultra represents a premium titanium sports watch engineered for extreme conditions, boasting a brighter 3000-nit Super AMOLED display, superior MIL-STD-810H durability, Wi-Fi/cellular connectivity, and exceptional 60-hour battery in Power Saving mode. Galaxy Watch Ultra's more powerful Exynos processor enables richer app ecosystems and smoother performance compared to Fitbit's limited OS. Battery longevity and ruggedness favor Samsung substantially. However, Fitbit Sense 2 excels in everyday wearability with its lighter 37.6g design and comprehensive health sensors at less than half the price. Choose Galaxy Watch Ultra if you need extreme durability, advanced connectivity, and performance; select Fitbit Sense 2 for balanced health tracking and comfort-focused daily wear.
Full Specifications
| Specification | Fitbit Sense 2 | Samsung Galaxy Watch Ultra |
|---|---|---|
| Software | Fitbit OS | Wear OS 5 with One UI Watch 6 |
| Body | ||
| Weight | 37.6 g | 60.5 g |
| Case material | Aluminum case | Titanium Grade 4 |
| Water resistance | 5 ATM | 10ATM + IP68 + MIL-STD-810H |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 6 days, 12 hours with GPS | Up to 60 hours in Power Saving mode (590 mAh) |
| Display | ||
| Size | 1.58 inch | 47mm (1.5") |
| Type | AMOLED | Super AMOLED with Sapphire Crystal glass, up to 3000 nits |
| Always-on display | ||
| Resolution | 336 x 336 | 480 x 480 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
| Processor | ||
| RAM | — | 2 GB |
| Chipset | — | Samsung Exynos W1000 (3nm, 5-core) |
Category Scores
Pros & Cons
Fitbit Sense 2
Pros
- Continuous EDA sensor for all-day stress tracking
- ECG and skin temperature tracking
- Lightweight and comfortable for 24/7 wear
- Up to 6 days of battery life
- Built-in GPS with Google Maps and Wallet support
Cons
- Removed third-party apps and music storage from original Sense
- No Wi-Fi connectivity
- Requires Fitbit Premium for advanced insights
- Limited smartwatch functionality compared to Wear OS
- Single physical button, no rotating crown
Samsung Galaxy Watch Ultra
Pros
- Premium titanium build with 10ATM water resistance and MIL-STD durability
- Bright 3000-nit Super AMOLED display with sapphire crystal protection
- Dual-frequency GPS (L1 + L5) for precise outdoor tracking
- Big 590 mAh battery delivers up to 100 hours in Power Saving mode
- Customizable Quick Button for fast access to workouts and apps
Cons
- Very expensive at $649 — Samsung's priciest watch yet
- Only one 47mm size, too large for smaller wrists
- BioActive sensor and BP/ECG features require Samsung phone
- Design closely mimics Apple Watch Ultra
- Limited third-party app ecosystem versus Apple Watch
Related Comparisons
Explore more in smartwatches, see all Fitbit products or all Samsung products. View full details for the Fitbit Sense 2 or the Samsung Galaxy Watch Ultra.