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Apple Watch Ultra 4 vs Garmin Fenix 8 Pro

Specs, price and the one trade-off that actually decides it — Apple Watch Ultra 4 against Garmin Fenix 8 Pro, side by side.

Cheaper to start

Apple Watch Ultra 4

Starts about $400 lower.

Rated higher

Garmin Fenix 8 Pro

9.4 vs 0.0 on our design scale.

Standout

Apple Watch Ultra 4

S11 chip with 64-bit dual-core processor

Apple Watch Ultra 4

Apple Watch Ultra 4

Apple's outdoor and endurance flagship watch, built around the S11 chip and up to 84 hours of battery life in Low Power Mode.

Where it wins, where it doesn't

Pros

  • Robust titanium case for durability in extreme conditions
  • Up to 84 hours of battery life in Low Power Mode
  • Customizable Action button for quick access to frequently used features

Cons

  • High price of $799 may be prohibitive for casual users
  • Limited availability and targeted towards a specific audience

Specifications

  • Audio / Dual speakersDual speakers
  • Audio / Media playbackMedia playback
  • Audio / SirenSiren
  • Audio / Three-microphone arrayThree-microphone array with beamforming and wind noise mitigation
  • Battery / Extended WorkoutUp to 25 hours with full GPS and heart rate
  • Battery / Fast Charge15 minutes adds up to 18 hours
  • Battery / Low Power ModeUp to 84 hours
  • Battery / Max Extended WorkoutUp to 45 hours for outdoor activity tracking
  • Battery / Normal UseMore than 2 days, up to 50 hours
  • Case MaterialNatural or black titanium, 100% recycled titanium in the case, 45% recycled content overall
  • ChipApple S11
  • Chip / 4-core Neural Engine4-core Neural Engine
  • Chip / 64GB capacity64GB capacity
  • Chip / S11 chipS11 chip with 64-bit dual-core processor
  • Connectivity / CellularCellular capable
  • Connectivity / GPSOn-device GPS, Apple's most accurate yet in a sports watch
  • Connectivity / SatelliteSatellite communications
  • Controls / Customizable Action buttonCustomizable Action button
  • Controls / Digital CrownDigital Crown with haptic feedback
  • Controls / GesturesSingle tap, double tap, and wrist flick gestures
  • Controls / Side buttonSide button
  • Controls / Siri powered by Apple IntelligenceSiri powered by Apple Intelligence
  • Environmental Requirements / Non-operating storage temperature-4° to 113° F (-20° to 45° C)
  • Environmental Requirements / On-wrist operating temperature-4° to 130° F (-20° to 55° C)
  • Environmental Requirements / Operating altitude-1600 feet to 29,500 feet (-500m to 9000m)
  • Environmental Requirements / Operating temperature32° to 95° F (0° to 35° C)
  • Environmental Requirements / Relative humidity5% to 90% noncondensing
  • Hardware and Buttons / Health Sensing SystemCustomizable Action button
  • Hardware and Buttons / MicrophoneThree-microphone array with beamforming and wind noise mitigation
  • Hardware and Buttons / SpeakerDual speakers
  • Health / Heart RateContinuous measurement every 5 seconds, all day
  • Health / Heart SensorsOptical (larger, power-efficient green LEDs) and electrical heart sensors
  • Health / HRVMeasured up to 24x more often than the previous generation
  • Material and FinishTitanium case, Grade 5 Natural, Black
  • Operating SystemwatchOS
  • Power and Battery Life / 15 minutes charge15 minutes for up to 18 hours of normal use
  • Power and Battery Life / 5 minutes charge5 minutes for up to 10 hours of sleep tracking
  • Power and Battery Life / Battery TypeBuilt‑in rechargeable lithium‑ion battery
  • Power and Battery Life / Charge TimeUp to 80% charge in about 45 minutes
  • Power and Battery Life / Extended Workout trackingUp to 25 hours Extended Workout tracking
  • Power and Battery Life / Fast-charge capableFast‑charge capable
  • Power and Battery Life / Max Extended Workout trackingUp to 45 hours Max Extended Workout tracking
  • Power and Battery Life / Multiday battery lifeMultiday battery life, up to 50 hours of normal use
  • Power and Battery Life / Workout trackingUp to 18 hours workout tracking
  • Size and Weight / Depth12mm
  • Size and Weight / Fits Wrist Size130–210mm
  • Size and Weight / Height49mm
  • Size and Weight / Weight (natural)63.0 grams
  • Size and Weight / Width44mm
  • SoftwarewatchOS 27
  • Workouts and Activity / Automatic track detectionAutomatic track detection
  • Workouts and Activity / Automatically generated waypointsAutomatically generated waypoints to cellular connectivity
  • Workouts and Activity / Average speed, elevation gained, and distanceAverage speed, elevation gained, and distance
  • Workouts and Activity / Backtrack GPS dataBacktrack GPS data
  • Workouts and Activity / Custom waypointsCustom waypoints
  • Workouts and Activity / Custom workoutsCustom workouts
  • Workouts and Activity / Customizable Workout ViewsCustomizable Workout Views
  • Workouts and Activity / CyclingCycling
  • Workouts and Activity / Elevation alertsElevation alerts
  • Workouts and Activity / Heart Rate Zone, pace, and target alertsHeart Rate Zone, pace, and target alerts
  • Workouts and Activity / Heart Rate ZonesHeart Rate Zones (customizable)
  • Workouts and Activity / HikingCompass with bearing, incline, elevation, and coordinates
  • Workouts and Activity / Multisport workoutMultisport workout
  • Workouts and Activity / Offline maps with custom route creationOffline maps with custom route creation
  • Workouts and Activity / PacerPacer
  • Workouts and Activity / Postworkout heart ratePostworkout heart rate
  • Workouts and Activity / Precision Start using Action buttonPrecision Start using Action button
  • Workouts and Activity / Race RouteRace Route
  • Workouts and Activity / RunningRunning
  • Workouts and Activity / Training Load / Workout Effort TrackingTraining Load / Workout Effort Tracking
  • Workouts and Activity / VO 2 maxVO 2 max
Garmin Fenix 8 Pro

Garmin Fenix 8 Pro

MicroLED display plus two-way InReach satellite messaging in a dive-rated tactical body.

Where it wins, where it doesn't

Pros

  • MicroLED — extreme brightness with no burn-in risk
  • Two-way InReach satellite messaging built in
  • Dive-rated tactical construction

Cons

  • Very high entry price
  • Too bulky and rugged for formal wear
  • Satellite features need an active subscription

Specifications

  • Audio / Dual speakers—
  • Audio / Media playback—
  • Audio / Siren—
  • Audio / Three-microphone array—
  • Battery / Extended Workout—
  • Battery / Fast Charge—
  • Battery / Low Power Mode—
  • Battery / Max Extended Workout—
  • Battery / Normal Use—
  • Case Material—
  • Chip—
  • Chip / 4-core Neural Engine—
  • Chip / 64GB capacity—
  • Chip / S11 chip—
  • Connectivity / Cellular—
  • Connectivity / GPS—
  • Connectivity / Satellite—
  • Controls / Customizable Action button—
  • Controls / Digital Crown—
  • Controls / Gestures—
  • Controls / Side button—
  • Controls / Siri powered by Apple Intelligence—
  • Environmental Requirements / Non-operating storage temperature—
  • Environmental Requirements / On-wrist operating temperature—
  • Environmental Requirements / Operating altitude—
  • Environmental Requirements / Operating temperature—
  • Environmental Requirements / Relative humidity—
  • Hardware and Buttons / Health Sensing System—
  • Hardware and Buttons / Microphone—
  • Hardware and Buttons / Speaker—
  • Health / Heart Rate—
  • Health / Heart Sensors—
  • Health / HRV—
  • Material and Finish—
  • Operating System—
  • Power and Battery Life / 15 minutes charge—
  • Power and Battery Life / 5 minutes charge—
  • Power and Battery Life / Battery Type—
  • Power and Battery Life / Charge Time—
  • Power and Battery Life / Extended Workout tracking—
  • Power and Battery Life / Fast-charge capable—
  • Power and Battery Life / Max Extended Workout tracking—
  • Power and Battery Life / Multiday battery life—
  • Power and Battery Life / Workout tracking—
  • Size and Weight / Depth—
  • Size and Weight / Fits Wrist Size—
  • Size and Weight / Height—
  • Size and Weight / Weight (natural)—
  • Size and Weight / Width—
  • Software—
  • Workouts and Activity / Automatic track detection—
  • Workouts and Activity / Automatically generated waypoints—
  • Workouts and Activity / Average speed, elevation gained, and distance—
  • Workouts and Activity / Backtrack GPS data—
  • Workouts and Activity / Custom waypoints—
  • Workouts and Activity / Custom workouts—
  • Workouts and Activity / Customizable Workout Views—
  • Workouts and Activity / Cycling—
  • Workouts and Activity / Elevation alerts—
  • Workouts and Activity / Heart Rate Zone, pace, and target alerts—
  • Workouts and Activity / Heart Rate Zones—
  • Workouts and Activity / Hiking—
  • Workouts and Activity / Multisport workout—
  • Workouts and Activity / Offline maps with custom route creation—
  • Workouts and Activity / Pacer—
  • Workouts and Activity / Postworkout heart rate—
  • Workouts and Activity / Precision Start using Action button—
  • Workouts and Activity / Race Route—
  • Workouts and Activity / Running—
  • Workouts and Activity / Training Load / Workout Effort Tracking—
  • Workouts and Activity / VO 2 max—