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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerApple Watch Ultra 2 vs Google Pixel Watch 4 (45mm)
The Apple Watch Ultra 2 is the premium option here, boasting a rugged design and a bright 3,000-nit display. It's worth considering if you want durability and advanced health features, but it's on the bulkier side at 2.17oz. The Google Pixel Watch 4 (45mm) shines with its impressive 40-hour battery life and lightweight build at just 1.29oz. If you're an Android user, this watch offers plenty of features, making it a solid pick for daily use, especially for those who prioritize fitness tracking and style in one.
⚖️ Weight: 2.18 oz vs 1.29 oz💽 Storage: 64 GB vs 32 GB🔋 Battery: 36h vs 40h
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Apple Watch Ultra 2
★4.7
(1,082)•Amazon
Compatibility:iPhone Xs or later with iOS 18 or later
Operating System:watchOS
Case Size:49mm (49mm H x 44mm W x 14.4mm D)
Case Material:Aerospace-grade titanium (Natural or Black finish)
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Google Pixel Watch 4 (45mm)
★4.5
(405)•Amazon
Compatibility:Android 11.0 or later (Google account required); not compatible with iOS
Operating System:Wear OS 6.0 (pre-installed)
Case Size:45mm (45.0 x 45.0 x 12.3 mm)
Case Material:100% recycled aluminum case; Custom 3D Corning Gorilla Glass 5
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Key spec differences
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
Winner= clear advantage
Spec
Apple Watch Ultra 2
Google Pixel Watch 4 (45mm)
Display2 specs
Display SizeKey
Apple Watch Ultra 2
1185 sq mm display area
Google Pixel Watch 4 (45mm)
1.4 in (Actua 360 domed design)
Resolution
Apple Watch Ultra 2
410 x 502 pixels (326 ppi)
Google Pixel Watch 4 (45mm)
456 x 456 pixels (320 ppi)
Performance1 specs
Storage
Apple Watch Ultra 2
64GBWinner
Google Pixel Watch 4 (45mm)
32GB eMMC flash
Battery1 specs
Battery CapacityKey
Apple Watch Ultra 2
Up to 36 hours (normal use); Up to 72 hours (Low Power Mode)
Google Pixel Watch 4 (45mm)
455 mAh; Up to 40 hours with Always-On Display; Up to 72 hours in Battery Saver mode
Design2 specs
Weight
Apple Watch Ultra 2
61.4 g (Natural Titanium); 61.8 g (Black Titanium) [case only]
Google Pixel Watch 4 (45mm)
36.7 g (without band)Winner
Water Resistance
Apple Watch Ultra 2
100 m (ISO 22810); 40 m recreational high-speed water sports (EN13319)
Google Pixel Watch 4 (45mm)
5 ATM (50 meters)
Software1 specs
Operating System
Apple Watch Ultra 2
watchOS
Google Pixel Watch 4 (45mm)
Wear OS 6.0 (pre-installed)
Connectivity1 specs
Connectivity
Apple Watch Ultra 2
LTE and UMTS (Cellular is standard); Wi-Fi 4 (802.11n); Bluetooth 5.3; Second-generation Ultra Wideband chip
Google Pixel Watch 4 (45mm)
Bluetooth 6.0; Wi-Fi 6 (802.11ax) 2.4GHz/5GHz; NFC; Ultra-Wideband (UWB); LTE version available
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Expand
Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: Apple Watch Ultra 2 vs Google Pixel Watch 4 (45mm)
Apple Watch Ultra 2
★4.7(1,082)Amazon
Google Pixel Watch 4 (45mm)
★4.5(405)Amazon
| Criterion | Apple Watch Ultra 2 | Google Pixel Watch 4 (45mm) |
|---|---|---|
| Rating | ★4.7(1,082)Amazon | ★4.5(405)Amazon |
Compatibility | iPhone Xs or later with iOS 18 or later | Android 11.0 or later (Google account required); not compatible with iOS |
Operating System | watchOS | Wear OS 6.0 (pre-installed) |
Case Size | 49mm (49mm H x 44mm W x 14.4mm D) | 45mm (45.0 x 45.0 x 12.3 mm) |
Case Material | Aerospace-grade titanium (Natural or Black finish) | 100% recycled aluminum case; Custom 3D Corning Gorilla Glass 5 |
Display Type | Always-On Retina LTPO2 OLED (flat sapphire crystal display) | Actua 360 AMOLED LTPO (1-60Hz) with 15% thinner bezels |
Display Size | 1185 sq mm display area | 1.4 in (Actua 360 domed design) |
Resolution | 410 x 502 pixels (326 ppi) | 456 x 456 pixels (320 ppi) |
Always On Display | Yes | Yes (Up to 3,000 nits peak brightness, 1 nit minimum) |
Water Resistance | 100 m (ISO 22810); 40 m recreational high-speed water sports (EN13319) | 5 ATM (50 meters) |
Durability | IP6X dust resistant; tested to MIL-STD 810H (altitude, high/low temp, temperature shock, immersion, freeze/thaw, ice/freezing rain, shock/vibration) | IP68 dust and water resistance; Custom 3D Corning Gorilla Glass 5 |
GPS | Precision dual-frequency GPS: L1 and L5 (GPS, GNSS, Galileo, and BeiDou) | Dual-frequency GPS (L1+L5); GLONASS, Galileo, BeiDou, QZSS, NavIC |
Connectivity | LTE and UMTS (Cellular is standard); Wi-Fi 4 (802.11n); Bluetooth 5.3; Second-generation Ultra Wideband chip | Bluetooth 6.0; Wi-Fi 6 (802.11ax) 2.4GHz/5GHz; NFC; Ultra-Wideband (UWB); LTE version available |
NFC Payments | Apple Pay | Google Wallet |
Sensors | Electrical heart sensor (ECG app); 3rd-generation optical heart sensor; temperature sensing; depth gauge (±1 m accuracy); water temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor; blood oxygen sensor (feature availability subject to US patent rulings) | Compass; Altimeter; Red/Infrared SpO2 sensors; Multipurpose electrical sensors (ECG); Multi-path optical heart rate sensor; 3-axis accelerometer; Gyroscope; Ambient light sensor; cEDA sensor (stress); Skin temperature sensor; Barometer; Magnetometer |
Health Features | ECG app; High/low heart rate notifications; Irregular rhythm notifications; Sleep tracking with stages; Sleep apnea notifications; Vitals app; Cycle tracking with retrospective ovulation estimates; Noise app | Gemini-powered Health Coach; Sleep Apnea detection; Daily Readiness; Cardio Load; ECG app; High/low heart rate notifications; Stress management (cEDA); Skin temperature variation |
Workout Modes | Customizable Action Button for instant workout start; Advanced running metrics (stride length, ground contact time); Multisport; Swimming; Hiking; Diving (Oceanic+ app required for dive computer functions) | 40+ exercise modes; Auto-workout detection; Custom runs; Real-time guidance; Pace training; Heart Zone training |
Storage | 64GB | 32GB eMMC flash |
Speaker Mic | Dual speakers (40% louder than Series 8); Three-microphone array with beamforming and wind noise mitigation | Built-in speaker (improved for Gemini); Microphone |
Calls | Yes (Cellular, Wi-Fi, and iPhone tethering) | Yes (via Bluetooth or standalone on LTE models) |
Battery | Up to 36 hours (normal use); Up to 72 hours (Low Power Mode) | 455 mAh; Up to 40 hours with Always-On Display; Up to 72 hours in Battery Saver mode |
Charging | Fast charging capable (0–80% in approx. 1 hour); USB-C Magnetic Fast Charging Cable included | Fast charging (50% in 15 min; 80% in 30 min; 100% in 60 min) via 5-pin magnetic dock |
Weight | 61.4 g (Natural Titanium); 61.8 g (Black Titanium) [case only] | 36.7 g (without band) |
Band Sizes | Trail Loop (S/M, M/L); Alpine Loop (S, M, L); Ocean Band (One Size); fits 130–210mm wrists depending on selection | Active Band included (Small: 150–185 mm; Large: 165–215 mm) |
Extras | S9 SiP with 4-core Neural Engine; Double tap gesture; On-device Siri; Precision Finding for iPhone 15/16 lineup; 86-decibel Siren; Night Mode (Modular Ultra face) | Snapdragon W5 Gen 2 chip; Cortex M55 co-processor; Satellite SOS (LTE only); Offline Google Maps; Safety Check; Fall Detection |
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Apple Watch Ultra 2
Rating:★4.7(1,082)Amazon
Compatibility:iPhone Xs or later with iOS 18 or later
Operating System:watchOS
Case Size:49mm (49mm H x 44mm W x 14.4mm D)
Case Material:Aerospace-grade titanium (Natural or Black finish)
Display Type:Always-On Retina LTPO2 OLED (flat sapphire crystal display)
Display Size:1185 sq mm display area
Resolution:410 x 502 pixels (326 ppi)
Always On Display:Yes
Water Resistance:100 m (ISO 22810); 40 m recreational high-speed water sports (EN13319)
Durability:IP6X dust resistant; tested to MIL-STD 810H (altitude, high/low temp, temperature shock, immersion, freeze/thaw, ice/freezing rain, shock/vibration)
GPS:Precision dual-frequency GPS: L1 and L5 (GPS, GNSS, Galileo, and BeiDou)
Connectivity:LTE and UMTS (Cellular is standard); Wi-Fi 4 (802.11n); Bluetooth 5.3; Second-generation Ultra Wideband chip
NFC Payments:Apple Pay
Sensors:Electrical heart sensor (ECG app); 3rd-generation optical heart sensor; temperature sensing; depth gauge (±1 m accuracy); water temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor; blood oxygen sensor (feature availability subject to US patent rulings)
Health Features:ECG app; High/low heart rate notifications; Irregular rhythm notifications; Sleep tracking with stages; Sleep apnea notifications; Vitals app; Cycle tracking with retrospective ovulation estimates; Noise app
Workout Modes:Customizable Action Button for instant workout start; Advanced running metrics (stride length, ground contact time); Multisport; Swimming; Hiking; Diving (Oceanic+ app required for dive computer functions)
Storage:64GB
Speaker Mic:Dual speakers (40% louder than Series 8); Three-microphone array with beamforming and wind noise mitigation
Calls:Yes (Cellular, Wi-Fi, and iPhone tethering)
Battery:Up to 36 hours (normal use); Up to 72 hours (Low Power Mode)
Charging:Fast charging capable (0–80% in approx. 1 hour); USB-C Magnetic Fast Charging Cable included
Weight:61.4 g (Natural Titanium); 61.8 g (Black Titanium) [case only]
Band Sizes:Trail Loop (S/M, M/L); Alpine Loop (S, M, L); Ocean Band (One Size); fits 130–210mm wrists depending on selection
Extras:S9 SiP with 4-core Neural Engine; Double tap gesture; On-device Siri; Precision Finding for iPhone 15/16 lineup; 86-decibel Siren; Night Mode (Modular Ultra face)
✓ Pros:
- • Brightest Apple display ever (up to 3,000 nits) for superior outdoor visibility
- • Excellent battery life for an Apple Watch (up to 36 hours standard, 72 hours low power)
- • Rugged titanium build with sapphire crystal and 100m water resistance
- • Fast S9 SiP allows for Double Tap gesture and on-device Siri
- • Precision dual-frequency GPS (L1+L5) offers accurate tracking in dense environments
✗ Cons:
- • Large 49mm x 14.4mm casing is bulky on smaller wrists
- • Blood Oxygen feature is disabled on units sold by Apple in the US (post-Jan 2024)
- • Requires an iPhone to function; no Android compatibility
- • Expensive entry price compared to standard Series models
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Google Pixel Watch 4 (45mm)
Rating:★4.5(405)Amazon
Compatibility:Android 11.0 or later (Google account required); not compatible with iOS
Operating System:Wear OS 6.0 (pre-installed)
Case Size:45mm (45.0 x 45.0 x 12.3 mm)
Case Material:100% recycled aluminum case; Custom 3D Corning Gorilla Glass 5
Display Type:Actua 360 AMOLED LTPO (1-60Hz) with 15% thinner bezels
Display Size:1.4 in (Actua 360 domed design)
Resolution:456 x 456 pixels (320 ppi)
Always On Display:Yes (Up to 3,000 nits peak brightness, 1 nit minimum)
Water Resistance:5 ATM (50 meters)
Durability:IP68 dust and water resistance; Custom 3D Corning Gorilla Glass 5
GPS:Dual-frequency GPS (L1+L5); GLONASS, Galileo, BeiDou, QZSS, NavIC
Connectivity:Bluetooth 6.0; Wi-Fi 6 (802.11ax) 2.4GHz/5GHz; NFC; Ultra-Wideband (UWB); LTE version available
NFC Payments:Google Wallet
Sensors:Compass; Altimeter; Red/Infrared SpO2 sensors; Multipurpose electrical sensors (ECG); Multi-path optical heart rate sensor; 3-axis accelerometer; Gyroscope; Ambient light sensor; cEDA sensor (stress); Skin temperature sensor; Barometer; Magnetometer
Health Features:Gemini-powered Health Coach; Sleep Apnea detection; Daily Readiness; Cardio Load; ECG app; High/low heart rate notifications; Stress management (cEDA); Skin temperature variation
Workout Modes:40+ exercise modes; Auto-workout detection; Custom runs; Real-time guidance; Pace training; Heart Zone training
Storage:32GB eMMC flash
Speaker Mic:Built-in speaker (improved for Gemini); Microphone
Calls:Yes (via Bluetooth or standalone on LTE models)
Battery:455 mAh; Up to 40 hours with Always-On Display; Up to 72 hours in Battery Saver mode
Charging:Fast charging (50% in 15 min; 80% in 30 min; 100% in 60 min) via 5-pin magnetic dock
Weight:36.7 g (without band)
Band Sizes:Active Band included (Small: 150–185 mm; Large: 165–215 mm)
Extras:Snapdragon W5 Gen 2 chip; Cortex M55 co-processor; Satellite SOS (LTE only); Offline Google Maps; Safety Check; Fall Detection
✓ Pros:
- • Battery life significantly improved to 40 hours with AOD enabled
- • Brighter Actua 360 display (3,000 nits) with thinner bezels
- • Faster charging (0-50% in just 15 minutes)
- • New Satellite SOS feature for emergency communication (LTE models)
✗ Cons:
- • Design remains largely unchanged (still uses Gorilla Glass 5)
- • Requires Android 11.0+ (no iOS support)
- • Case thickness (12.3mm) is substantial compared to competitors
- • Satellite SOS requires an active LTE plan/carrier support
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Which one is better?
The Google Pixel Watch 4 (45mm) is the better buy for most people - its 40-hour battery crushes the Apple Watch Ultra 2's 36-hour standard usage. That said, grab the Apple Watch Ultra 2 if you need advanced health features and don't mind the extra weight - it's heftier at 2.17oz.
Who should buy each?
Choose the Apple Watch Ultra 2 if: you want advanced health metrics, need a rugged design for outdoor activities, or need a premium watch for iPhone compatibility. (2.18 oz weight, 64 GB storage)
Choose the Google Pixel Watch 4 (45mm) if: you want a lightweight design, need longer battery life for all-day usage, or prefer a more budget-friendly smartwatch experience. (1.29 oz weight, 32 GB storage)
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Frequently Asked Questions
+Which has better value?
Apple Watch Ultra 2 excels if you value brightest apple display ever (up to 3,000 nits) for superior outdoor visibility. Google Pixel Watch 4 (45mm) is better if you prioritize battery life significantly improved to 40 hours with aod enabled. Pick based on your budget and daily use.
+Is this an independent review?
Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.
+Do newer models exist?
Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.
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