Amazfit T-Rex 3 vs Suunto Vertical Solar
You're looking at two very different watches: the Amazfit T-Rex 3 and the Suunto Vertical Solar. The T-Rex 3 is the mid-range option, boasting an notable 27-day battery life, while the Suunto Vertical Solar offers solar charging that can stretch its life to 60 days. If you're thinking about 2026, the Amazfit T-Rex 3 gives you a vibrant 1.5" AMOLED display that shines even in bright sunlight, but the Suunto excels in long-term usage thanks to its solar capabilities. In real-world use, the T-Rex 3's battery means you won't be charging it often, perfect for weekend adventures. But if you're planning a long trek, the Vertical Solar's solar charging can keep you powered up for weeks. The trade-off? The T-Rex 3 has a brighter display, making it easier to read outdoors, while the Vertical Solar's display is less vibrant but still functional. What matters most here is how you plan to use your watch—adventure or everyday use. Key specs: Weight: 2.41 oz vs 2.61 oz and Battery: 27 days vs 60 days (daily mode with solar).
Why compare these? The Amazfit T-Rex 3 (mid-range) and Suunto Vertical Solar (high-end) represent different approaches to smartwatches. While they may appeal to different budgets, many buyers consider both options. This 2026 comparison helps you decide if the differences justify the price gap.
As an Amazon Associate I earn from qualifying purchases.
Key Differences at a Glance
| Aspect | Amazfit T-Rex | Suunto Vertical |
|---|---|---|
| User Rating | ✓4.5★ (1,926 reviews) | 4.3★ (200 reviews) |
| Top Strength | Incredible 27-day battery life crushes the competition | Industry-leading battery life with solar charging efficiency |
| Main Drawback | No built-in speaker (alerts are beeps/vibrations only) | MIP display is less vibrant than AMOLED competitors |
| Market Position | Mid-range | ✓Premium |
Amazfit T-Rex 3
Android 7.0 or later; iOS 14.0 or later (Zepp App required)
Zepp OS 4
48.5mm x 48.5mm x 13.75mm
Polymer middle frame; Stainless steel bezel (316L)
Suunto Vertical Solar
Android and iOS (via Suunto app)
Suunto UI
49mm (49 x 49 x 13.6 mm / 1.93 x 1.93 x 0.54 in)
Bezel: Titanium Grade 5; Case: Glass fiber reinforced polyamide; Glass: Sapphire crystal; Strap: Silicone
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
+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: Amazfit T-Rex 3 vs Suunto Vertical Solar
Amazfit T-Rex 3
Suunto Vertical Solar
| Criterion | Amazfit T-Rex 3 | Suunto Vertical Solar |
|---|---|---|
| Rating | ★4.5(1,926)Amazon | ★4.3(200)Amazon |
Compatibility | Android 7.0 or later; iOS 14.0 or later (Zepp App required) | Android and iOS (via Suunto app) |
Operating System | Zepp OS 4 | Suunto UI |
Case Size | 48.5mm x 48.5mm x 13.75mm | 49mm (49 x 49 x 13.6 mm / 1.93 x 1.93 x 0.54 in) |
Case Material | Polymer middle frame; Stainless steel bezel (316L) | Bezel: Titanium Grade 5; Case: Glass fiber reinforced polyamide; Glass: Sapphire crystal; Strap: Silicone |
Display Type | AMOLED; Gorilla Glass; Peak brightness 2000 nits | Matrix Memory-in-Pixel (MIP) with LED backlight |
Display Size | 1.5 in (38.1 mm) diameter | 1.4 in |
Resolution | 480 x 480 pixels (322 ppi) | 280 x 280 pixels |
Always On Display | Yes | Yes (Passive technology) |
Water Resistance | 10 ATM (100 meters); Freediving certified (EN13319) to 45m | 100 m (10 ATM) |
Durability | MIL-STD-810H (70°C heat / -30°C cold / Shock / Humidity); Mud-resistant bridge and buttons | MIL-STD-810H tested (Military Standard); Operating temp: -20°C to +55°C (-5°F to +130°F) |
GPS | Dual-band GNSS (L1+L5); 6 Satellite Positioning Systems (GPS, GLONASS, Galileo, BeiDou, QZSS, NAVIC) | Dual-band GNSS (L1 + L5); GPS, GLONASS, GALILEO, QZSS, BEIDOU |
Connectivity | Wi-Fi (2.4GHz); Bluetooth 5.2; BLE | Bluetooth, Wi-Fi (required for map downloads) |
NFC Payments | Zepp Pay (Europe/parts of Asia only); Not supported on US models | No (Not supported) |
Sensors | BioTracker™ 6.0 PPG biometric sensor (SpO2, Heart Rate); Accelerometer; Gyroscope; Geomagnetic sensor; Barometric altimeter; Ambient light sensor; Temperature sensor (skin/water) | Optical heart rate; blood oxygen (SpO2); barometric altimeter; digital compass; depth meter (snorkeling up to 10m) |
Health Features | Readiness Score; HRV (Heart Rate Variability); Sleep Breathing Quality; One-tap measuring (HR, SpO2, Stress, Breathing rate); Sleep stages (REM/Deep/Light); PAI Health Assessment | HRV (Heart Rate Variability); blood oxygen; sleep tracking (duration, quality, stages); stress and recovery status; VO2max |
Workout Modes | Hyrox Race mode; Ultramarathon; Freediving; Strength Training (auto-detection of 25 movements); Triathlon; Skiing; Snowboarding; Surf; and 170+ others | 95+ sport modes; Suunto Coach (AI training guidance); offline route navigation; POI navigation; bearing navigation |
Storage | 32GB (Approx. 26GB user-accessible for Music/Maps) | 32 GB (Flash memory for offline maps) |
Speaker Mic | Microphone (for Zepp Flow voice commands); No Speaker (Buzzer/Beeper only for alerts) | No (No built-in speaker or microphone) |
Calls | No (Cannot answer calls on wrist; can reject/ignore calls) | No (Notification alerts only; predefined quick replies on Android) |
Battery | 700 mAh; Up to 27 days (Typical usage); Up to 13 days (Heavy usage); Up to 42 hours (Accuracy GPS mode); Up to 114 hours (GPS Long Battery Life) | Up to 60 days (Daily Mode with solar); Up to 85 hours (Dual-band GPS with solar); Up to 500 hours (Tour mode with solar) |
Charging | Magnetic charging base (2-pin); Approx. 3 hours to full charge | Suunto magnetic fast charger (USB-A); Solar charging |
Weight | 68.3 g (without strap) | 74 g / 2.61 oz (Titanium Solar model) |
Band Sizes | 22mm width; Fits 145–210mm wrists (Proprietary screws but includes adapters for standard bands in some regions) | Fits wrist sizes 125–175 mm; standard 22 mm quick-release width |
Extras | Offline Maps (Contour/Terrain); Turn-by-turn navigation; Zepp Flow (AI voice assistant); Night Display mode; Glove mode | Free global offline outdoor maps; weather forecast; storm alarm; solar intensity widget; flashlight mode (screen based); snorkeling mode |
| Pros |
|
|
| Cons |
|
|
As an Amazon Associate I earn from qualifying purchases. | Check Price on Amazon→ | Check Price on Amazon→ |
Amazfit T-Rex 3
Android 7.0 or later; iOS 14.0 or later (Zepp App required)
Zepp OS 4
48.5mm x 48.5mm x 13.75mm
Polymer middle frame; Stainless steel bezel (316L)
AMOLED; Gorilla Glass; Peak brightness 2000 nits
1.5 in (38.1 mm) diameter
Pros
- Incredible 27-day battery life crushes the competition
- Large, bright 1.5" AMOLED (2000 nits) is easy to read outdoors
Cons
- No built-in speaker (alerts are beeps/vibrations only)
- NFC payments (Zepp Pay) are not supported on US hardware
Suunto Vertical Solar
Android and iOS (via Suunto app)
Suunto UI
49mm (49 x 49 x 13.6 mm / 1.93 x 1.93 x 0.54 in)
Bezel: Titanium Grade 5; Case: Glass fiber reinforced polyamide; Glass: Sapphire crystal; Strap: Silicone
Matrix Memory-in-Pixel (MIP) with LED backlight
1.4 in
Pros
- Industry-leading battery life with solar charging efficiency
- Free global offline maps with ample 32GB storage and Wi-Fi downloading
Cons
- MIP display is less vibrant than AMOLED competitors
- No music storage (music controls only)
Which one is better?
The Amazfit T-Rex 3 is the better buy for most people - its notable 27-day battery life crushes the Suunto Vertical Solar's 60 days in daily mode. That said, grab the Suunto if you need solar charging for extended trips - it's designed for long adventures.
Who should buy each?
Choose the Amazfit T-Rex 3 if: you want a vibrant 1.5" AMOLED display, a long-lasting battery for daily wear, or you need offline maps for your outdoor activities.
Choose the Suunto Vertical Solar if: you need extended battery life with solar charging, prefer a rugged watch for extreme sports, or want free global offline maps for your adventures. (2.61 oz weight)
Quality Seekers
Higher user rating (4.5★ vs 4.3★) indicates better overall satisfaction
→ Choose Amazfit T-Rex
Safe Choice Buyers
More widely tested with 1,926 reviews vs 200
→ Choose Amazfit T-Rex
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose Suunto Vertical
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ Choose Amazfit T-Rex
Conclusion
Amazfit T-Rex 3 and Suunto Vertical Solar are both solid choices. Match the strengths above to your budget and workflow to make the best call.
Bottom line: The Amazfit T-Rex 3 edges ahead with a 4.5★ rating compared to 4.3★. However, Suunto Vertical Solar remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: Amazfit T-Rex 3 or Suunto Vertical Solar?
Amazfit T-Rex 3 is the better choice if you prioritize incredible 27-day battery life crushes the competition. Suunto Vertical Solar wins if you value industry-leading battery life with solar charging efficiency. Both are rated highly (4.5★ vs 4.3★), so consider your specific needs and budget.
+What are the main differences between Amazfit T-Rex 3 and Suunto Vertical Solar?
Key differences: Amazfit T-Rex 3 offers incredible 27-day battery life crushes the competition, while Suunto Vertical Solar stands out with industry-leading battery life with solar charging efficiency. Consider that Amazfit T-Rex 3 no built-in speaker (alerts are beeps/vibrations only). Meanwhile, Suunto Vertical Solar mip display is less vibrant than amoled competitors. Check the detailed specs table above for a complete comparison.
+Where can US buyers get the best price?
For US buyers, Amazon typically offers competitive pricing with Prime shipping, easy returns, and reliable warranty support. We recommend comparing prices on both products using our affiliate links above—prices fluctuate regularly, and you may find sales or deals.
+Is this comparison up to date?
Yes, this comparison is current for 2026. We regularly verify specs, ratings, and availability. Last verified: January 27, 2026. PageBen uses affiliate links for monetization, but our recommendations are research-driven and independent.
Affiliate disclosure
PageBen uses Amazon affiliate links. If you purchase through our links, we may earn a commission at no extra cost to you. This supports independent content for US shoppers.