In depth comparison and review of Fitbit Sense 2 and Apple Watch Ultra 2. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | - | WatchOS 10 |
| Supported Host Device OS | Android 8.0 (Oreo) or later, iOS 14 or later | iOS 17 or later |
| Activity/Sport | Multisport | Multisport, custom workouts |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | Three-microphone array |
| Audio Output | Speaker | Dual speakers |
| Width | 40.5 mm | - |
| Height | 40.5 mm | - |
| Depth | 12.3 mm | - |
| Body Details | - | Case only: 61.4 g |
| Body Material | Aluminium | Aerospace-grade titanium |
| Protection | Water-resistant | Water-resistant, splash-resistant, corrosion resistant, dust-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Sensors | Ambient light sensor, altimeter, SpO2 sensor, 3-axis accelerometer, temperature, optical heart sensor, electrodermal activity (EDA) sensor, vibration motor, multipurpose electrical sensor | Accelerometer, ambient light sensor, digital compass, depth gauge, electrical heart sensor, ECG sensor, blood oxygen sensor, gyroscope, water temperature sensor, temperature sensing, optical heart sensor (3d gen), always-on altimeter |
|---|---|---|
| Tracking Data | Distance, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, active time, menstrual cycle, breathing rate, temperature, sleep quality score, blood glucose | Distance, time, calories burned, activity, sleep activity, heart rate, blood oxygen saturation, sleep stages, menstrual cycle, ECG, ovulation phase, rapid eye movement (REM), depth |
| Modes | 40+ sports modes | Night mode |
| Goal Setting | Yes | Yes |
| Features | Find phone function, automatic exercise recognition, breathing training function, Active Zone Minutes, HRV index, Sleep Score, Sleep Profile, Stress Management Score, Daily Readiness Score, all day body response tracking, cardio fitness score | Call handling, store & play music, Fall detection, Emergency SOS, heart rate zones, Family Setup support, International Emergency Calling, Siren (86-decibel), Crash Detection, noise monitoring, Compass Waypoint, precision finding for iPhone, brightness: 3000 nits, flashlight boost, track detection |
| Notifications | SMS, applications, high and low heart rate, calls, irregular rhythm | Calendar, SMS, Email, high and low heart rate, irregular rhythm, cardio fitness |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS receiver | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Payment Technology | FitBit Pay | Apple Pay |
| Internet of Things (IoT) Compatible | Yes | Yes |
| IoT Intelligent Assistant | Alexa built-in | Siri |
| IoT Voice Controlled | Direct | Direct |
| CELLULAR | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Technology | - | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | - | 4G |
| SIM Card Type | - | Electronic SIM card (e-SIM) |
| CONNECTIVITY | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| 3M UMTS Band | - | Band 1, Band 2, Band 5, Band 10 |
|---|---|---|
| 4G LTE Band | - | Band 1, Band 2, Band 3, Band 4, Band 5, Band 6, Band 7, Band 8, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 39, Band 40, Band 41, Band 66 |
| Wireless Interface | NFC, Bluetooth 5.0 | IEEE 802.11b/g/n, LTE, Ultra-Wideband (UWB), Bluetooth 5.3 |
| DISPLAY | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Type | Colour | Retina LTPO OLED - colour |
|---|---|---|
| Resolution | - | 410 x 502 pixels |
| Screen Protection | - | Flat sapphire front crystal with display edge protection |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Type | Touch sensitive screen, push button | Touch sensitive screen, customisable action button, side button, double tap gesture |
|---|
| CASE | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Case Size | - | 49 mm |
|---|---|---|
| Case Shape | Square | Rectangular |
| Case Back | Aluminium | - |
| Case Details | Platinum aluminum | Titanium |
| Crown Type | - | Digital with haptic feedback |
| BAND | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Band Type | Band | Alpine Loop |
|---|---|---|
| Band Size | S | S |
| Fits Wrist with Circumference | 129-175 mm | 130-160 mm |
| Changeable | Yes | Yes |
| Clasp Type | Pin-and-tuck | G-hook |
| Band Material | - | Textile |
| Band Colour | Lunar white | Blue | Indigo | Olive | Orange/beige | Green/gray | Blue/black | Orange | White |
| STORAGE | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Storage Capacity | - | 64 GB |
|---|
| CPU | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Manufacturer | - | Apple |
|---|---|---|
| CPU Type | - | S9 SiP |
| Features | - | W3 Apple wireless chip, second-generation Ultra Wideband chip, 4-core Neural Engine |
| BATTERY | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Technology | Lithium polymer | Lithium Ion |
|---|---|---|
| Battery Life | 6 day(s) | 36 hours |
| Battery Life Details | GPS mode - up to 5 hour(s) | Normal use - up to 36 hour(s) Low power mode - up to 18 hour(s) Power saving mode - up to 72 hour(s) |
| Rechargeable Battery | - | Yes |
| Recharge Time | 2 hours | - |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Fitbit Sense 2 | Apple Watch Ultra 2 |
|---|
| Included Accessories | Charging cable, 6-month Fitbit Premium membership, wristband (158 - 209 mm) | Magnetic fast charger to USB-C cable (1 m) |
|---|---|---|
| Preloaded Software | Alarm, FitBit Pay | GymKit, Oceanic+, Depth app |
| Compliant Standards | - | IP6X, BFR-free, PVC-free, Beryllium-free, Mercury-free, MIL-STD-810H, EN13319, Arsenic-free |
| Specific Absorption Rate (SAR) | - | 0.22 W/kg (head) 0.43 W/kg (limb) |
| Carbon Footprint | - | 0 kg carbon emissions |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 45 °C | 55 °C |
| Min Operating Temperature | -10 °C | -20 °C |
| Manufacturer Model Number | - | A2986 |
| Warranty | 2-year warranty | - |
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