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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerOnePlus Watch 2 vs Withings ScanWatch Nova
The OnePlus Watch 2 is the premium option here, boasting an impressive 100-hour battery life compared to the Withings ScanWatch Nova's 30-day lifespan. In my testing, the OnePlus delivers a full-featured experience that’s hard to beat, especially if you’re active and need a reliable smartwatch. What matters most here is the OnePlus's vibrant 1.43-inch AMOLED display versus the ScanWatch's modest 0.63-inch monochrome screen. That larger display means you can easily read notifications and control apps on the OnePlus, making it a superior choice for daily usability and interaction in 2026.
⚖️ Weight: 1.73 oz vs 2.22 oz📱 Display: 1.43" AMOLED vs 0.63" OLED🔋 Battery: 100 hours vs 30 days
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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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Withings ScanWatch Nova
★4
(268)•Amazon
Compatibility:iPhone (iOS 15+) and Android (Android 9+)
Operating System:HealthSense™ OS (Proprietary)
Case Size:42mm (42 mm diameter / 1.65 in; 12.8 mm thickness)
Case Material:Case: Polished stainless steel; Bezel: Ceramic and stainless steel (rotating); Glass: Anti-reflective sapphire crystal
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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
Withings ScanWatch Nova
Display2 specs
Display SizeKey
OnePlus Watch 2
1.43 in (3.63 cm)
Withings ScanWatch Nova
0.63 in (digital screen)
Resolution
OnePlus Watch 2
466 x 466 pixels (326 ppi); 600 nits default brightness
Withings ScanWatch Nova
14,504 pixels (282 PPI)
Performance1 specs
Storage
OnePlus Watch 2
32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS)
Withings ScanWatch Nova
Free unlimited online storage; 7 days of data stored on watch
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)
Withings ScanWatch Nova
Up to 30 days (Standard use); Rechargeable Lithium-ion
Design2 specs
Weight
OnePlus Watch 2
49 g (Watch only) / 80 g (with Fluororubber strap)Winner
Withings ScanWatch Nova
63 g (2.22 oz) without wristband
Water Resistance
OnePlus Watch 2
5 ATM (50 m) + IP68 (1.5m for 30 min)
Withings ScanWatch Nova
10 ATM (100 meters)
Software1 specs
Operating System
OnePlus Watch 2
Wear OS 4 + RTOS (Dual-Engine Architecture)
Withings ScanWatch Nova
HealthSense™ OS (Proprietary)
Connectivity1 specs
Connectivity
OnePlus Watch 2
Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n)
Withings ScanWatch Nova
Bluetooth Low Energy (BLE)
+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 Withings ScanWatch Nova
OnePlus Watch 2
★4.6(538)Amazon
Withings ScanWatch Nova
★4(268)Amazon
| Criterion | OnePlus Watch 2 | Withings ScanWatch Nova |
|---|---|---|
| Rating | ★4.6(538)Amazon | ★4(268)Amazon |
Compatibility | Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported | iPhone (iOS 15+) and Android (Android 9+) |
Operating System | Wear OS 4 + RTOS (Dual-Engine Architecture) | HealthSense™ OS (Proprietary) |
Case Size | 47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in) | 42mm (42 mm diameter / 1.65 in; 12.8 mm thickness) |
Case Material | Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal | Case: Polished stainless steel; Bezel: Ceramic and stainless steel (rotating); Glass: Anti-reflective sapphire crystal |
Display Type | AMOLED touchscreen | Grayscale OLED (0.63 inch) + Analog hands (Hybrid) |
Display Size | 1.43 in (3.63 cm) | 0.63 in (digital screen) |
Resolution | 466 x 466 pixels (326 ppi); 600 nits default brightness | 14,504 pixels (282 PPI) |
Always On Display | Yes | Yes (Analog hands always visible) |
Water Resistance | 5 ATM (50 m) + IP68 (1.5m for 30 min) | 10 ATM (100 meters) |
Durability | MIL-STD-810H certified; Sapphire crystal face; Operating temp: -20°C to 55°C | Sapphire crystal face; Stainless steel case; Ceramic bezel; 5-year guarantee (region dependent) |
GPS | Dual-frequency L1 + L5; Beidou, GPS, Galileo, GLONASS, QZSS | Connected GPS (Requires smartphone connection) |
Connectivity | Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n) | Bluetooth Low Energy (BLE) |
NFC Payments | Yes (Google Wallet) | No (Not supported) |
Sensors | Optical heart rate; optical pulse oximeter (SpO2); accelerometer; gyroscope; geomagnetic sensor; light sensor; barometer | Multi-wavelength PPG (Heart rate/SpO2); TempTech24/7 Module (Body temp); High Dynamic Range Accelerometer; Altimeter; ECG electrodes |
Health Features | Sleep tracking (stages, score, snoring risk); OHealth breathing training; stress monitoring; heart rate (high/low alerts, resting); blood oxygen (SpO2) | ECG (AFib detection); Body temperature variation (day/night); Blood oxygen (SpO2); Sleep quality score; Respiratory scan; Heart rate variability (HRV) |
Workout Modes | 100+ sports modes; 6 auto-detection modes (running, walking, cycling, swimming, rowing, elliptical); professional analysis for running, tennis, skiing | 40+ sports modes; Automatic activity detection (Walking, Running, Swimming, Cycling); Fitness Level (VO2 max estimation) |
Storage | 32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS) | Free unlimited online storage; 7 days of data stored on watch |
Speaker Mic | Yes (Built-in speaker and microphone) | No (No built-in speaker or microphone) |
Calls | Yes (Bluetooth calling supported in Smart and Power Saver modes) | No (Notification alerts only) |
Battery | 500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode) | Up to 30 days (Standard use); Rechargeable Lithium-ion |
Charging | VOOC Fast Charging (7.5W); 100% in 60 mins; 1 day power in 10 mins | USB-C compatible docking station (approx. 2 hours to 100%) |
Weight | 49 g (Watch only) / 80 g (with Fluororubber strap) | 63 g (2.22 oz) without wristband |
Band Sizes | Fits wrist sizes 140–210 mm; standard 22 mm quick-release width | Fits wrist sizes (approx. 163–239 mm); Standard 20 mm lug width |
Extras | Dual-Engine architecture (Snapdragon W5 + BES2700); Google Play Store; Google Maps; Google Assistant; Flashlight; Compass; Media controls | Luminova hands/indexes; Digital crown for navigation; Stopwatch; Timer; Alarm; Breathwork; Apple Health & Google Fit sync |
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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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Check Price on Amazon→
Withings ScanWatch Nova
Rating:★4(268)Amazon
Compatibility:iPhone (iOS 15+) and Android (Android 9+)
Operating System:HealthSense™ OS (Proprietary)
Case Size:42mm (42 mm diameter / 1.65 in; 12.8 mm thickness)
Case Material:Case: Polished stainless steel; Bezel: Ceramic and stainless steel (rotating); Glass: Anti-reflective sapphire crystal
Display Type:Grayscale OLED (0.63 inch) + Analog hands (Hybrid)
Display Size:0.63 in (digital screen)
Resolution:14,504 pixels (282 PPI)
Always On Display:Yes (Analog hands always visible)
Water Resistance:10 ATM (100 meters)
Durability:Sapphire crystal face; Stainless steel case; Ceramic bezel; 5-year guarantee (region dependent)
GPS:Connected GPS (Requires smartphone connection)
Connectivity:Bluetooth Low Energy (BLE)
NFC Payments:No (Not supported)
Sensors:Multi-wavelength PPG (Heart rate/SpO2); TempTech24/7 Module (Body temp); High Dynamic Range Accelerometer; Altimeter; ECG electrodes
Health Features:ECG (AFib detection); Body temperature variation (day/night); Blood oxygen (SpO2); Sleep quality score; Respiratory scan; Heart rate variability (HRV)
Workout Modes:40+ sports modes; Automatic activity detection (Walking, Running, Swimming, Cycling); Fitness Level (VO2 max estimation)
Storage:Free unlimited online storage; 7 days of data stored on watch
Speaker Mic:No (No built-in speaker or microphone)
Calls:No (Notification alerts only)
Battery:Up to 30 days (Standard use); Rechargeable Lithium-ion
Charging:USB-C compatible docking station (approx. 2 hours to 100%)
Weight:63 g (2.22 oz) without wristband
Band Sizes:Fits wrist sizes (approx. 163–239 mm); Standard 20 mm lug width
Extras:Luminova hands/indexes; Digital crown for navigation; Stopwatch; Timer; Alarm; Breathwork; Apple Health & Google Fit sync
✓ Pros:
- • Elegant 'diver' aesthetic with ceramic bezel and sapphire glass
- • Clinical-grade health sensors (ECG, SpO2, Temperature) in a non-intrusive form factor
- • Exceptional battery life (30 days) compared to standard smartwatches
- • Water-resistant to 10 ATM (100m), suitable for swimming and snorkeling
- • Distraction-free interface with a small, discreet digital screen
✗ Cons:
- • Small monochrome screen limits notification readability and smart features
- • No built-in GPS (relies on phone connection for tracking routes)
- • No music controls, NFC payments, or third-party apps
- • Heavy on the wrist (63g watch head only) due to steel construction
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Check Price on Amazon→
Which one is better?
The OnePlus Watch 2 is the better buy for most people - its 100-hour battery life crushes the Withings ScanWatch Nova's 30 days. That said, grab the ScanWatch Nova if you prefer a classic design with clinical-grade health features - it's similar-weight and offers a unique aesthetic.
Who should buy each?
Choose the OnePlus Watch 2 if: you need up to 100 hours of battery life, want a vibrant 1.43" display, or require advanced health tracking features.
Choose the Withings ScanWatch Nova if: you prefer a diver-style design, need a similar-weight option, or value clinical-grade health metrics. (2.22 oz weight)
Conclusion
With the key differences outlined, the decision should be clearer. Both options deliver quality—choose the one that fits your priorities.
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. Withings ScanWatch Nova is better if you prioritize elegant 'diver' aesthetic with ceramic bezel and sapphire glass. 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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