Apple Watch Ultra (1st Gen) vs Fitbit Sense
The Verdict
Apple's Watch Ultra dominates with premium build quality, exceptional durability rated for 40m scuba diving, and a larger 49mm LTPO OLED display with superior resolution. Its S8 chip powers snappier performance and smoother watchOS 11+ experience. Battery reaches 36 hours standard or 60 hours in Low Power Mode, outpacing Fitbit's 6+ day claim substantially. Both offer comprehensive health tracking: ECG, SpO2, skin temperature, heart rate, and sleep monitoring. Fitbit Sense excels in value and everyday practicality, weighing only 45.9g with aluminum construction and requiring charging every 6+ days. Missing cellular connectivity limits Sense's standalone capabilities compared to the Ultra's full LTE support. For serious athletes demanding ruggedness, underwater capability, and premium ecosystem integration, Apple Watch Ultra justifies its $799 price. Budget-conscious users prioritizing battery longevity and basic fitness tracking should consider Fitbit Sense's excellent value proposition.
Who Should Buy
Buy the Apple Watch Ultra (1st Gen) if…
- →Titanium case is exceptionally durable for extreme sports and diving
- →36-hour battery life (60 hrs in Low Power Mode) is longest for Apple Watch
- →2000-nit peak brightness is readable in any outdoor condition
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
Category Scores
Pros & Cons
Apple Watch Ultra (1st Gen)
Pros
- Titanium case is exceptionally durable for extreme sports and diving
- 36-hour battery life (60 hrs in Low Power Mode) is longest for Apple Watch
- 2000-nit peak brightness is readable in any outdoor condition
- Dual-frequency L1+L5 GPS provides precise tracking even in canyons
- Action Button is customizable for workouts, compass, and more
Cons
- 49mm case is very large — may be too bulky for smaller wrists
- Heavy at 61.3 g compared to standard Apple Watch models
- $799 is expensive for a first-generation product
- S8 chip is the same as Series 8 — no processing advantage
- Only one 49mm size option with no smaller variant
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
Full Specifications
| Spec | Apple Watch Ultra (1st Gen) | Fitbit Sense |
|---|---|---|
| Software | watchOS 9 (upgradable to watchOS 11+) | Fitbit OS |
| Body | ||
| Weight | 61.3 g | 45.9 g |
| Case material | Titanium | Aluminum |
| Water resistance | WR100, EN13319 (certified for recreational scuba diving to 40m) | 5ATM |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 36 hours (60 hrs in Low Power Mode) | Up to 6+ days |
| Display | ||
| Size | 49mm | 40mm (1.58 inches) |
| Type | LTPO OLED Always-On Retina | AMOLED |
| Always-on display | ||
| Resolution | 410 x 502 | 336 x 336 |
| Processor | ||
| Chipset | Apple S8 SiP | Fitbit custom processor |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.3 | 5.0 |
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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 Apple products or all Fitbit products. View full details for the Apple Watch Ultra (1st Gen) or the Fitbit Sense.