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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerOnePlus Watch 2 vs Google Pixel Watch 4 (45mm)
Get the OnePlus Watch 2 unless you need cellular connectivity. The battery life is a whopping 100 hours compared to the Google Pixel Watch 4 (45mm)'s 40 hours, making it ideal for long trips or busy schedules. In real-world use, the OnePlus Watch 2 shines with its rugged stainless steel build and sapphire crystal, perfect for active lifestyles. On the flip side, if you want the latest display technology, the Pixel Watch's 3,000 nits peak brightness is impressive, but it's not worth the trade-off for battery life.
⚖️ Weight: 1.73 oz vs 1.29 oz🔋 Battery: 100h vs 40h
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OnePlus Watch 2
★4.6
(538)•Amazon
Compatibility:Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported
Operating System:Wear OS 4 + RTOS (Dual-Engine Architecture)
Case Size:47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in)
Case Material:Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal
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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
OnePlus Watch 2
Google Pixel Watch 4 (45mm)
Display2 specs
Display SizeKey
OnePlus Watch 2
1.43 in (3.63 cm)
Google Pixel Watch 4 (45mm)
1.4 in (Actua 360 domed design)
Resolution
OnePlus Watch 2
466 x 466 pixels (326 ppi); 600 nits default brightness
Google Pixel Watch 4 (45mm)
456 x 456 pixels (320 ppi)
Performance1 specs
Storage
OnePlus Watch 2
32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS)
Google Pixel Watch 4 (45mm)
32GB eMMC flash
Battery1 specs
Battery CapacityKey
OnePlus Watch 2
500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver 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
OnePlus Watch 2
49 g (Watch only) / 80 g (with Fluororubber strap)
Google Pixel Watch 4 (45mm)
36.7 g (without band)Winner
Water Resistance
OnePlus Watch 2
5 ATM (50 m) + IP68 (1.5m for 30 min)
Google Pixel Watch 4 (45mm)
5 ATM (50 meters)
Software1 specs
Operating System
OnePlus Watch 2
Wear OS 4 + RTOS (Dual-Engine Architecture)
Google Pixel Watch 4 (45mm)
Wear OS 6.0 (pre-installed)
Connectivity1 specs
Connectivity
OnePlus Watch 2
Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n)
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: OnePlus Watch 2 vs Google Pixel Watch 4 (45mm)
OnePlus Watch 2
★4.6(538)Amazon
Google Pixel Watch 4 (45mm)
★4.5(405)Amazon
| Criterion | OnePlus Watch 2 | Google Pixel Watch 4 (45mm) |
|---|---|---|
| Rating | ★4.6(538)Amazon | ★4.5(405)Amazon |
Compatibility | Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported | Android 11.0 or later (Google account required); not compatible with iOS |
Operating System | Wear OS 4 + RTOS (Dual-Engine Architecture) | Wear OS 6.0 (pre-installed) |
Case Size | 47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in) | 45mm (45.0 x 45.0 x 12.3 mm) |
Case Material | Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal | 100% recycled aluminum case; Custom 3D Corning Gorilla Glass 5 |
Display Type | AMOLED touchscreen | Actua 360 AMOLED LTPO (1-60Hz) with 15% thinner bezels |
Display Size | 1.43 in (3.63 cm) | 1.4 in (Actua 360 domed design) |
Resolution | 466 x 466 pixels (326 ppi); 600 nits default brightness | 456 x 456 pixels (320 ppi) |
Always On Display | Yes | Yes (Up to 3,000 nits peak brightness, 1 nit minimum) |
Water Resistance | 5 ATM (50 m) + IP68 (1.5m for 30 min) | 5 ATM (50 meters) |
Durability | MIL-STD-810H certified; Sapphire crystal face; Operating temp: -20°C to 55°C | IP68 dust and water resistance; Custom 3D Corning Gorilla Glass 5 |
GPS | Dual-frequency L1 + L5; Beidou, GPS, Galileo, GLONASS, QZSS | Dual-frequency GPS (L1+L5); GLONASS, Galileo, BeiDou, QZSS, NavIC |
Connectivity | Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n) | Bluetooth 6.0; Wi-Fi 6 (802.11ax) 2.4GHz/5GHz; NFC; Ultra-Wideband (UWB); LTE version available |
NFC Payments | Yes (Google Wallet) | Google Wallet |
Sensors | Optical heart rate; optical pulse oximeter (SpO2); accelerometer; gyroscope; geomagnetic sensor; light sensor; barometer | 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 | Sleep tracking (stages, score, snoring risk); OHealth breathing training; stress monitoring; heart rate (high/low alerts, resting); blood oxygen (SpO2) | 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 | 100+ sports modes; 6 auto-detection modes (running, walking, cycling, swimming, rowing, elliptical); professional analysis for running, tennis, skiing | 40+ exercise modes; Auto-workout detection; Custom runs; Real-time guidance; Pace training; Heart Zone training |
Storage | 32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS) | 32GB eMMC flash |
Speaker Mic | Yes (Built-in speaker and microphone) | Built-in speaker (improved for Gemini); Microphone |
Calls | Yes (Bluetooth calling supported in Smart and Power Saver modes) | Yes (via Bluetooth or standalone on LTE models) |
Battery | 500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode) | 455 mAh; Up to 40 hours with Always-On Display; Up to 72 hours in Battery Saver mode |
Charging | VOOC Fast Charging (7.5W); 100% in 60 mins; 1 day power in 10 mins | Fast charging (50% in 15 min; 80% in 30 min; 100% in 60 min) via 5-pin magnetic dock |
Weight | 49 g (Watch only) / 80 g (with Fluororubber strap) | 36.7 g (without band) |
Band Sizes | Fits wrist sizes 140–210 mm; standard 22 mm quick-release width | Active Band included (Small: 150–185 mm; Large: 165–215 mm) |
Extras | Dual-Engine architecture (Snapdragon W5 + BES2700); Google Play Store; Google Maps; Google Assistant; Flashlight; Compass; Media controls | Snapdragon W5 Gen 2 chip; Cortex M55 co-processor; Satellite SOS (LTE only); Offline Google Maps; Safety Check; Fall Detection |
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OnePlus Watch 2
Rating:★4.6(538)Amazon
Compatibility:Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported
Operating System:Wear OS 4 + RTOS (Dual-Engine Architecture)
Case Size:47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in)
Case Material:Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal
Display Type:AMOLED touchscreen
Display Size:1.43 in (3.63 cm)
Resolution:466 x 466 pixels (326 ppi); 600 nits default brightness
Always On Display:Yes
Water Resistance:5 ATM (50 m) + IP68 (1.5m for 30 min)
Durability:MIL-STD-810H certified; Sapphire crystal face; Operating temp: -20°C to 55°C
GPS:Dual-frequency L1 + L5; Beidou, GPS, Galileo, GLONASS, QZSS
Connectivity:Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n)
NFC Payments:Yes (Google Wallet)
Sensors:Optical heart rate; optical pulse oximeter (SpO2); accelerometer; gyroscope; geomagnetic sensor; light sensor; barometer
Health Features:Sleep tracking (stages, score, snoring risk); OHealth breathing training; stress monitoring; heart rate (high/low alerts, resting); blood oxygen (SpO2)
Workout Modes:100+ sports modes; 6 auto-detection modes (running, walking, cycling, swimming, rowing, elliptical); professional analysis for running, tennis, skiing
Storage:32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS)
Speaker Mic:Yes (Built-in speaker and microphone)
Calls:Yes (Bluetooth calling supported in Smart and Power Saver modes)
Battery:500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode)
Charging:VOOC Fast Charging (7.5W); 100% in 60 mins; 1 day power in 10 mins
Weight:49 g (Watch only) / 80 g (with Fluororubber strap)
Band Sizes:Fits wrist sizes 140–210 mm; standard 22 mm quick-release width
Extras:Dual-Engine architecture (Snapdragon W5 + BES2700); Google Play Store; Google Maps; Google Assistant; Flashlight; Compass; Media controls
✓ Pros:
- • Groundbreaking 100-hour battery life for a full-featured Wear OS watch
- • Premium build with stainless steel chassis and sapphire crystal standard
- • Dual-frequency GPS (L1+L5) ensures high accuracy in urban environments
- • Fast charging provides a full day's power in just 10 minutes
- • Fluid performance via Snapdragon W5 Gen 1 processor
✗ Cons:
- • Available in only one large size (47mm), which may not fit small wrists
- • No LTE/Cellular option available
- • Strictly incompatible with iOS (iPhone)
- • Crown rotates but does not function for scrolling menus
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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 OnePlus Watch 2 is the better buy for most people - its 100-hour battery life crushes the Pixel Watch 4. That said, grab the Google Pixel Watch 4 (45mm) if you need Bluetooth calling and a stunning display - it's lighter.
Who should buy each?
Choose the OnePlus Watch 2 if: you prioritize battery life for extended use, value a premium build for outdoor activities, or want a smartwatch that lasts without constant charging. (1.73 oz weight)
Choose the Google Pixel Watch 4 (45mm) if: you love brighter displays for better visibility, need cellular options for on-the-go connectivity, or want advanced health features like ECG monitoring. (1.29 oz weight)
Conclusion
We hope this comparison helps you buy with confidence. Both products are dependable; the right one depends on how you will use it.
Frequently Asked Questions
+Which has better value?
OnePlus Watch 2 excels if you value groundbreaking 100-hour battery life for a full-featured wear os watch. 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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