Fitbit Sense vs Samsung Galaxy Watch Ultra
The Verdict
Fitbit Sense delivers essential health monitoring in a lightweight, affordable package with solid 6+ day battery life and comprehensive sensors including ECG, SpO2, and skin temperature tracking. Samsung Galaxy Watch Ultra represents the premium tier, featuring a titanium construction rated to military standards, significantly brighter 3000-nit Super AMOLED display, faster Exynos W1000 processor, cellular connectivity, and exceptional 60-hour battery endurance in power-saving mode. While both track identical health metrics, the Galaxy Watch Ultra's superior build quality, processing power, and extended battery justify the $350 premium for users prioritizing durability and performance. However, the Fitbit Sense remains an excellent choice for budget-conscious buyers seeking straightforward health tracking without unnecessary complexity or the extra weight.
Who Should Buy
Buy the Fitbit Sense if…
- →Most comprehensive health sensor suite at launch — EDA, ECG, SpO2, skin temp
- →6+ day battery outlasts Apple Watch and Samsung Galaxy Watch
- →Built-in GPS for phone-free outdoor workouts
Buy the Samsung Galaxy Watch Ultra if…
- →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
Category Scores
Pros & Cons
Fitbit Sense
Pros
- Most comprehensive health sensor suite at launch — EDA, ECG, SpO2, skin temp
- 6+ day battery outlasts Apple Watch and Samsung Galaxy Watch
- Built-in GPS for phone-free outdoor workouts
- Stress management score with EDA sensor is unique
- NFC for Fitbit Pay contactless payments
Cons
- Fitbit OS app ecosystem is very limited compared to watchOS/Wear OS
- Capacitive button is unreliable and frustrating to press
- Many advanced features require Fitbit Premium subscription ($10/mo)
- Google acquisition created uncertainty about Fitbit OS future
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
Full Specifications
| Spec | Fitbit Sense | Samsung Galaxy Watch Ultra |
|---|---|---|
| Software | Fitbit OS | Wear OS 5 with One UI Watch 6 |
| Body | ||
| Weight | 45.9 g | 60.5 g |
| Case material | Aluminum | Titanium Grade 4 |
| Water resistance | 5ATM | 10ATM + IP68 + MIL-STD-810H |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 6+ days | Up to 60 hours in Power Saving mode (590 mAh) |
| Display | ||
| Size | 40mm (1.58 inches) | 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 |
| Processor | ||
| Chipset | Fitbit custom processor | Samsung Exynos W1000 (3nm, 5-core) |
| RAM | — | 2 GB |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Fitbit products or all Samsung products. View full details for the Fitbit Sense or the Samsung Galaxy Watch Ultra.