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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerOnePlus Watch 2 vs Apple Watch Ultra 3
If you're weighing the OnePlus Watch 2 against the Apple Watch Ultra 3, the OnePlus Watch 2 takes the lead for battery life, boasting an incredible 100 hours compared to the Ultra 3's 72 hours in low power mode. This is a game-changer for users who want to go days without charging their smartwatch. In real-world use, that means the OnePlus Watch 2 can easily last through long trips or busy weekends without needing a power source.
⚖️ Weight: 1.73 oz vs 2.18 oz💽 Storage: 32 GB vs 64 GB🔋 Battery: 100h vs 72h
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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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Apple Watch Ultra 3
★4.7
(425)•Amazon
Compatibility:iPhone Xs or later (incl. iPhone SE 2nd gen+) 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)
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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
Apple Watch Ultra 3
Display2 specs
Display SizeKey
OnePlus Watch 2
1.43 in (3.63 cm)
Apple Watch Ultra 3
1245 sq mm display area
Resolution
OnePlus Watch 2
466 x 466 pixels (326 ppi); 600 nits default brightness
Apple Watch Ultra 3
422 x 514 pixels (326 ppi)
Performance1 specs
Storage
OnePlus Watch 2
32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS)
Apple Watch Ultra 3
64GBWinner
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)
Apple Watch Ultra 3
Up to 36 hours (normal use); Up to 72 hours (Low Power Mode)
Design2 specs
Weight
OnePlus Watch 2
49 g (Watch only) / 80 g (with Fluororubber strap)Winner
Apple Watch Ultra 3
61.8 g
Water Resistance
OnePlus Watch 2
5 ATM (50 m) + IP68 (1.5m for 30 min)
Apple Watch Ultra 3
100 m (ISO 22810); EN13319 recreational scuba diving to 40 m (130 ft)
Software1 specs
Operating System
OnePlus Watch 2
Wear OS 4 + RTOS (Dual-Engine Architecture)
Apple Watch Ultra 3
watchOS
Connectivity1 specs
Connectivity
OnePlus Watch 2
Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n)
Apple Watch Ultra 3
LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; U2 Ultra Wideband chip
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: OnePlus Watch 2 vs Apple Watch Ultra 3
OnePlus Watch 2
★4.6(538)Amazon
Apple Watch Ultra 3
★4.7(425)Amazon
| Criterion | OnePlus Watch 2 | Apple Watch Ultra 3 |
|---|---|---|
| Rating | ★4.6(538)Amazon | ★4.7(425)Amazon |
Compatibility | Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported | iPhone Xs or later (incl. iPhone SE 2nd gen+) with iOS 18 or later |
Operating System | Wear OS 4 + RTOS (Dual-Engine Architecture) | watchOS |
Case Size | 47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in) | 49mm (49mm H x 44mm W x 14.4mm D) |
Case Material | Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal | Aerospace-grade titanium (Natural or Black) |
Display Type | AMOLED touchscreen | Always-On Retina display (LTPO3 OLED) with flat sapphire crystal |
Display Size | 1.43 in (3.63 cm) | 1245 sq mm display area |
Resolution | 466 x 466 pixels (326 ppi); 600 nits default brightness | 422 x 514 pixels (326 ppi) |
Always On Display | Yes | Yes |
Water Resistance | 5 ATM (50 m) + IP68 (1.5m for 30 min) | 100 m (ISO 22810); EN13319 recreational scuba diving to 40 m (130 ft) |
Durability | MIL-STD-810H certified; Sapphire crystal face; Operating temp: -20°C to 55°C | IP6X dust resistance; MIL-STD 810H tested |
GPS | Dual-frequency L1 + L5; Beidou, GPS, Galileo, GLONASS, QZSS | Precision dual-frequency GPS (L1 and L5) |
Connectivity | Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n) | LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; U2 Ultra Wideband chip |
NFC Payments | Yes (Google Wallet) | Apple Pay |
Sensors | Optical heart rate; optical pulse oximeter (SpO2); accelerometer; gyroscope; geomagnetic sensor; light sensor; barometer | Electrical heart (ECG), optical heart (Gen 3), temperature (body/water), blood oxygen, depth gauge, altimeter, accelerometer, gyroscope |
Health Features | Sleep tracking (stages, score, snoring risk); OHealth breathing training; stress monitoring; heart rate (high/low alerts, resting); blood oxygen (SpO2) | ECG, Blood Oxygen, Heart Rate zones, Sleep Tracking/Apnea notifications, Vitals app, Cycle Tracking with retrospective ovulation estimates |
Workout Modes | 100+ sports modes; 6 auto-detection modes (running, walking, cycling, swimming, rowing, elliptical); professional analysis for running, tennis, skiing | Multisport, Running (Advanced Metrics), Hiking (Topographic Maps), Ocean Diving, Swimming, Cycling |
Storage | 32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS) | 64GB |
Speaker Mic | Yes (Built-in speaker and microphone) | Dual speakers; three-microphone array with beamforming and wind noise mitigation; 86dB Siren |
Calls | Yes (Bluetooth calling supported in Smart and Power Saver modes) | Yes (via Cellular or Wi-Fi) |
Battery | 500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode) | Up to 36 hours (normal use); Up to 72 hours (Low Power Mode) |
Charging | VOOC Fast Charging (7.5W); 100% in 60 mins; 1 day power in 10 mins | Fast charging (0–80% in approx. 1 hour) with USB-C Magnetic Fast Charger |
Weight | 49 g (Watch only) / 80 g (with Fluororubber strap) | 61.8 g |
Band Sizes | Fits wrist sizes 140–210 mm; standard 22 mm quick-release width | Fits 130–210mm wrists (Alpine Loop, Trail Loop, Ocean Band) |
Extras | Dual-Engine architecture (Snapdragon W5 + BES2700); Google Play Store; Google Maps; Google Assistant; Flashlight; Compass; Media controls | S10 SiP, Double Tap gesture, On-device Siri, Precision Finding for iPhone, Flashlight/Night Mode, Crash Detection, 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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Apple Watch Ultra 3
Rating:★4.7(425)Amazon
Compatibility:iPhone Xs or later (incl. iPhone SE 2nd gen+) 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)
Display Type:Always-On Retina display (LTPO3 OLED) with flat sapphire crystal
Display Size:1245 sq mm display area
Resolution:422 x 514 pixels (326 ppi)
Always On Display:Yes
Water Resistance:100 m (ISO 22810); EN13319 recreational scuba diving to 40 m (130 ft)
Durability:IP6X dust resistance; MIL-STD 810H tested
GPS:Precision dual-frequency GPS (L1 and L5)
Connectivity:LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; U2 Ultra Wideband chip
NFC Payments:Apple Pay
Sensors:Electrical heart (ECG), optical heart (Gen 3), temperature (body/water), blood oxygen, depth gauge, altimeter, accelerometer, gyroscope
Health Features:ECG, Blood Oxygen, Heart Rate zones, Sleep Tracking/Apnea notifications, Vitals app, Cycle Tracking with retrospective ovulation estimates
Workout Modes:Multisport, Running (Advanced Metrics), Hiking (Topographic Maps), Ocean Diving, Swimming, Cycling
Storage:64GB
Speaker Mic:Dual speakers; three-microphone array with beamforming and wind noise mitigation; 86dB Siren
Calls:Yes (via Cellular or Wi-Fi)
Battery:Up to 36 hours (normal use); Up to 72 hours (Low Power Mode)
Charging:Fast charging (0–80% in approx. 1 hour) with USB-C Magnetic Fast Charger
Weight:61.8 g
Band Sizes:Fits 130–210mm wrists (Alpine Loop, Trail Loop, Ocean Band)
Extras:S10 SiP, Double Tap gesture, On-device Siri, Precision Finding for iPhone, Flashlight/Night Mode, Crash Detection, Fall Detection
✓ Pros:
- • Class-leading 3,000-nit display brightness
- • Rugged titanium build with 100m water resistance
- • Excellent battery life relative to category (up to 72h low power)
- • Precision dual-frequency GPS ideal for outdoor sports
✗ Cons:
- • Large 49mm case may be too bulky for smaller wrists
- • High price point
- • Exclusive to iPhone ecosystem
- • Minimal design changes from previous generation
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Which one is better?
The OnePlus Watch 2 is the better buy for most people - its groundbreaking 100-hour battery life crushes the Apple Watch Ultra 3. That said, grab the Ultra 3 if you need a rugged design and superior display brightness - it's 3,000 nits versus 600 nits.
Who should buy each?
Choose the OnePlus Watch 2 if: you want 100 hours of battery life, prefer a lighter watch at 1.73 oz, or need a premium build without breaking the bank.
Choose the Apple Watch Ultra 3 if: you need a rugged watch with 100m water resistance, value a brighter 3,000-nit display for outdoor use, or want advanced health features like ECG.
Conclusion
OnePlus Watch 2 and Apple Watch Ultra 3 are both solid choices. Match the strengths above to your budget and workflow to make the best call.
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. Apple Watch Ultra 3 is better if you prioritize class-leading 3,000-nit display brightness. 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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