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2026 comparison
Updated Jan 7, 2026
|Sources: Amazon, ManufacturerGarmin Enduro 3 vs OnePlus Watch 2
The Garmin Enduro 3 is the flagship option here, boasting an incredible battery life of up to 90 days thanks to solar charging. In contrast, the OnePlus Watch 2, while offering a respectable 100 hours, is designed more for everyday use with its AMOLED display and integrated speaker. After comparing the specs, the key difference lies in battery endurance and size. The Garmin's 51mm case may feel bulky for some, but its lightweight design makes it ideal for ultra-endurance athletes. Meanwhile, the OnePlus Watch 2 shines with its sleek stainless steel build, making it a stylish choice for daily wearers who need quick access to smart features like Bluetooth calling.
⚖️ Weight: 2.22 oz vs 1.73 oz🔋 Battery: 90 days vs 100 hours📏 Size: 51mm vs 47mm
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Garmin Enduro 3
★4
(7)•Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:51mm x 51mm x 15.7mm
Case Material:Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens
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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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Key spec differences
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
Winner= clear advantage
Spec
Garmin Enduro 3
OnePlus Watch 2
Display2 specs
Display SizeKey
Garmin Enduro 3
1.4 in (35.56 mm) diameter
OnePlus Watch 2
1.43 in (3.63 cm)
Resolution
Garmin Enduro 3
280 x 280 pixels
OnePlus Watch 2
466 x 466 pixels (326 ppi); 600 nits default brightness
Performance1 specs
Storage
Garmin Enduro 3
32GB
OnePlus Watch 2
32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS)
Battery1 specs
Battery CapacityKey
Garmin Enduro 3
Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar
OnePlus Watch 2
500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode)
Design2 specs
Weight
Garmin Enduro 3
63 g (Case only: 57 g) — includes UltraFit nylon strap
OnePlus Watch 2
49 g (Watch only) / 80 g (with Fluororubber strap)Winner
Water Resistance
Garmin Enduro 3
10 ATM (water pressure equivalent to 100 meters)
OnePlus Watch 2
5 ATM (50 m) + IP68 (1.5m for 30 min)
Software1 specs
Operating System
Garmin Enduro 3
Garmin OS (Proprietary)
OnePlus Watch 2
Wear OS 4 + RTOS (Dual-Engine Architecture)
Connectivity1 specs
Connectivity
Garmin Enduro 3
Bluetooth; ANT+; Wi-Fi
OnePlus Watch 2
Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n)
+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: Garmin Enduro 3 vs OnePlus Watch 2
Garmin Enduro 3
★4(7)Amazon
OnePlus Watch 2
★4.6(538)Amazon
| Criterion | Garmin Enduro 3 | OnePlus Watch 2 |
|---|---|---|
| Rating | ★4(7)Amazon | ★4.6(538)Amazon |
Compatibility | iPhone, Android (Garmin Connect app required) | Android 8.0+ only (requires GMS 23.45.23+); iOS and Android Go edition NOT supported |
Operating System | Garmin OS (Proprietary) | Wear OS 4 + RTOS (Dual-Engine Architecture) |
Case Size | 51mm x 51mm x 15.7mm | 47mm (47.0 x 46.6 x 12.1 mm / 1.85 x 1.83 x 0.47 in) |
Case Material | Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens | Chassis: Stainless steel; Bottom: Plastic (PC/PC+glass fiber); Cover: 2.5D Sapphire Crystal |
Display Type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED touchscreen |
Display Size | 1.4 in (35.56 mm) diameter | 1.43 in (3.63 cm) |
Resolution | 280 x 280 pixels | 466 x 466 pixels (326 ppi); 600 nits default brightness |
Always On Display | Yes (MIP display is always visible) | Yes |
Water Resistance | 10 ATM (water pressure equivalent to 100 meters) | 5 ATM (50 m) + IP68 (1.5m for 30 min) |
Durability | MIL-STD-810H (Thermal, Shock, Water); Scratch-resistant Sapphire lens | MIL-STD-810H certified; Sapphire crystal face; Operating temp: -20°C to 55°C |
GPS | Multi-band GNSS with SatIQ technology; GPS, GLONASS, Galileo, QZSS, BeiDou | Dual-frequency L1 + L5; Beidou, GPS, Galileo, GLONASS, QZSS |
Connectivity | Bluetooth; ANT+; Wi-Fi | Bluetooth 5.0, Wi-Fi 2.4GHz/5GHz (802.11 a/b/g/n) |
NFC Payments | Garmin Pay | Yes (Google Wallet) |
Sensors | Elevate Gen 5 optical heart rate sensor (ECG capable); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer | Optical heart rate; optical pulse oximeter (SpO2); accelerometer; gyroscope; geomagnetic sensor; light sensor; barometer |
Health Features | Garmin ECG App (region dependent); Body Battery; Sleep Score and advanced monitoring; HRV Status; Pulse Ox; Nap detection; Jet Lag Adviser; Health Snapshot | Sleep tracking (stages, score, snoring risk); OHealth breathing training; stress monitoring; heart rate (high/low alerts, resting); blood oxygen (SpO2) |
Workout Modes | Ultrarunning (with rest timer); Adventure Racing; Trail Run; Advanced Strength Training; Hiking; Cycling (MTB, Gravel, Road); Swimming (Pool & Open Water); Skiing; Surfing; and 100+ others | 100+ sports modes; 6 auto-detection modes (running, walking, cycling, swimming, rowing, elliptical); professional analysis for running, tennis, skiing |
Storage | 32GB | 32 GB ROM + 2 GB RAM (Approx. 4GB reserved for RTOS) |
Speaker Mic | None (Audio prompts via connected Bluetooth headphones only) | Yes (Built-in speaker and microphone) |
Calls | No (Can accept/decline calls to control phone; Android users can send text replies) | Yes (Bluetooth calling supported in Smart and Power Saver modes) |
Battery | Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar | 500 mAh; Up to 100 hours (Smart Mode); Up to 48 hours (Heavy Use); Up to 12 days (Power Saver Mode) |
Charging | Garmin proprietary plug charger (USB-C cable included); Solar charging | VOOC Fast Charging (7.5W); 100% in 60 mins; 1 day power in 10 mins |
Weight | 63 g (Case only: 57 g) — includes UltraFit nylon strap | 49 g (Watch only) / 80 g (with Fluororubber strap) |
Band Sizes | Fits wrists 127–225mm (UltraFit nylon strap included); QuickFit 26mm compatible | Fits wrist sizes 140–210 mm; standard 22 mm quick-release width |
Extras | Built-in LED Flashlight (Red/White strobes); Dynamic Round-Trip Routing; TopoActive Maps (preloaded); NextFork Map Guide; Grade Adjusted Pace; Real-time Stamina | Dual-Engine architecture (Snapdragon W5 + BES2700); Google Play Store; Google Maps; Google Assistant; Flashlight; Compass; Media controls |
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Garmin Enduro 3
Rating:★4(7)Amazon
Compatibility:iPhone, Android (Garmin Connect app required)
Operating System:Garmin OS (Proprietary)
Case Size:51mm x 51mm x 15.7mm
Case Material:Fiber-reinforced polymer case with titanium rear cover; Titanium bezel; Power Sapphire solar charging lens
Display Type:Sunlight-visible, transflective memory-in-pixel (MIP)
Display Size:1.4 in (35.56 mm) diameter
Resolution:280 x 280 pixels
Always On Display:Yes (MIP display is always visible)
Water Resistance:10 ATM (water pressure equivalent to 100 meters)
Durability:MIL-STD-810H (Thermal, Shock, Water); Scratch-resistant Sapphire lens
GPS:Multi-band GNSS with SatIQ technology; GPS, GLONASS, Galileo, QZSS, BeiDou
Connectivity:Bluetooth; ANT+; Wi-Fi
NFC Payments:Garmin Pay
Sensors:Elevate Gen 5 optical heart rate sensor (ECG capable); Pulse Ox blood oxygen saturation monitor; Barometric altimeter; Compass; Gyroscope; Accelerometer; Thermometer
Health Features:Garmin ECG App (region dependent); Body Battery; Sleep Score and advanced monitoring; HRV Status; Pulse Ox; Nap detection; Jet Lag Adviser; Health Snapshot
Workout Modes:Ultrarunning (with rest timer); Adventure Racing; Trail Run; Advanced Strength Training; Hiking; Cycling (MTB, Gravel, Road); Swimming (Pool & Open Water); Skiing; Surfing; and 100+ others
Storage:32GB
Speaker Mic:None (Audio prompts via connected Bluetooth headphones only)
Calls:No (Can accept/decline calls to control phone; Android users can send text replies)
Battery:Smartwatch mode: Up to 36 days (90 days with solar); GPS Only: Up to 120 hours (320 hours with solar); Expedition GPS: Unlimited with solar
Charging:Garmin proprietary plug charger (USB-C cable included); Solar charging
Weight:63 g (Case only: 57 g) — includes UltraFit nylon strap
Band Sizes:Fits wrists 127–225mm (UltraFit nylon strap included); QuickFit 26mm compatible
Extras:Built-in LED Flashlight (Red/White strobes); Dynamic Round-Trip Routing; TopoActive Maps (preloaded); NextFork Map Guide; Grade Adjusted Pace; Real-time Stamina
✓ Pros:
- • Unrivaled battery life: up to 90 days in smartwatch mode with solar
- • Incredibly lightweight (63g) for a 51mm watch due to nylon strap/titanium
- • Built-in LED flashlight is a game-changer for ultra-endurance events
- • Excellent visibility in direct sunlight thanks to MIP display
- • Preloaded TopoActive maps with SatIQ for superior navigation
✗ Cons:
- • Lacks the speaker/microphone found in the Fenix 8 series
- • No diving certification (unlike Fenix 8 which is rated to 40m)
- • MIP display is less vibrant indoors compared to AMOLED rivals
- • Large 51mm case size may be too bulky for smaller wrists
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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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Which one is better?
The Garmin Enduro 3 is the better buy for most people - its jaw-dropping 90 days of battery life crushes the OnePlus Watch 2. That said, grab the OnePlus Watch 2 if you want a more compact design and integrated speaker, as it's nearlylighter and offers a vibrant display.
Who should buy each?
Choose the Garmin Enduro 3 if: you need extreme battery life for ultra-long adventures, you prefer a similar-weight design for sports, or you want detailed GPS tracking for outdoor activities. (2.22 oz weight)
Choose the OnePlus Watch 2 if: you want a stylish smartwatch for daily use, you need Bluetooth calling for convenience, or you prefer a brighter AMOLED display for indoor visibility. (1.73 oz weight)
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?
Garmin Enduro 3 excels if you value unrivaled battery life: up to 90 days in smartwatch mode with solar. OnePlus Watch 2 is better if you prioritize groundbreaking 100-hour battery life for a full-featured wear os watch. 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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