Amazfit made a quietly smart move with the Cheetah 2 line: instead of one flagship and a stripped-down budget option, they built two watches for two types of runners. The Cheetah 2 Pro is the road-and-marathon machine. The Cheetah 2 Ultra is the trail-and-ultra-distance beast. Same family, different intent.
If you're cross-shopping the two, the choice comes down to what kind of running you actually do, and how much screen and battery matter to you. Let's lay it out.
The Short Version
Cheetah 2 Ultra: Bigger screen, more battery, more storage. Built for trail runners and ultra athletes who need offline maps and navigation for long days in the backcountry.
Cheetah 2 Pro: Lighter, more compact, still loaded with the same core sensor and GPS tech. Built for road runners and marathon trainers who want performance data without the trail-specific overhead.
Spec Comparison
| Feature | Cheetah 2 Ultra | Cheetah 2 Pro |
|---|---|---|
| Price | $599.99 | ~$449.99 |
| Case Size | 47.4 x 47.4mm | 48 x 48mm |
| Thickness | 15.6mm (HR sensor) / 13.3mm | 15.6mm (HR sensor) / 13.2mm |
| Weight | 52g (no strap) | 45.6g (no strap) |
| Display | 1.5" AMOLED, 480x480, 323 PPI | 1.32" AMOLED, 466x466, 353 PPI |
| Peak Brightness | 3,000 nits | 3,000 nits |
| Frame/Case | Grade 5 Titanium | Grade 5 Titanium |
| Bezel | Grade 5 Titanium | Plastic |
| Buttons | Titanium | Aluminum alloy |
| Glass | Sapphire | Sapphire |
| Battery | 780 mAh | 540 mAh |
| Trail Running GPS | 33 hours | 31 hours |
| Typical Daily Use | 30 days | 20 days |
| Storage | 64GB | 32GB |
| Strap Width | 22mm | 20mm |
| Sports Modes | 180+ | 170+ |
| Sensor | BioTracker 6.0 (5PD/2LED) | BioTracker 6.0 (5PD/2LED) |
| GPS | Dual-band, 6 satellite systems | Dual-band, 6 satellite systems |
Display: The Clearest Difference
This is where you'll feel the split immediately. The Ultra's 1.5-inch AMOLED gives you roughly 17% more screen real estate than the Pro's 1.32-inch display. On paper that sounds incremental. In practice, it's the difference between a watch that shows you four data fields and one that shows you six, or a map that's actually readable without squinting.
The Pro has a slightly sharper PPI (353 vs 323), but at display sizes this small, that's functionally invisible. Both hit 3,000 nits of peak brightness, so outdoor readability is excellent on either model. If you're running with maps or complex workout pages, the Ultra wins outright.
Battery and Storage: The Ultra's Edge
The Ultra's 780 mAh battery vs the Pro's 540 mAh translates to roughly 2 more hours of Trail Running GPS and 10 extra days of typical use. For a weekend warrior running 2-4 hours a week, that's academic. For an ultramarathoner racing 50 miles, it's the difference between crossing the finish line with data and watching your watch die at mile 40.
Storage is the other meaningful gap. The Ultra's 64GB vs the Pro's 32GB means room for full regional map packs, route files, and music without management. If you're the type who wants everything loaded before you leave cell range, the Ultra is purpose-built for that.
Running Features: More Alike Than Different
Both watches use the same BioTracker 6.0 sensor (5PD/2LED) and the same dual-band GPS with six satellite systems. The core running metrics (heart rate, HRV, VO2 max, lactate threshold, training load, recovery status) are shared between the two models.
Both support:
- Gradient-adjusted pace and running power.
- Zepp Coach AI adaptive training plans (5K to marathon).
- TrainingPeaks, Runna, and Intervals.icu sync.
- Automatic Strava upload.
- Built-in flashlight and mic/speaker.
- 24/7 heart rate, sleep, and stress tracking.
The Ultra adds Trail Running mode with load factor calculations. This factors in gradient, terrain resistance, and vertical gain into effort estimates. The Pro's standard running modes don't apply these adjustments, which matters more on technical trail terrain than on the road.
The Ultra also has a color-coded elevation overview across your route. Useful for previewing what's coming before you get there, or understanding effort distribution after the fact. The Pro doesn't have this feature.
Build and Comfort
The Ultra is the more premium build of the two. Both watches share Grade 5 titanium frame and case, but the Ultra goes further with a titanium bezel (the Pro uses plastic) and titanium buttons (the Pro uses aluminum alloy). The Pro keeps its price down by reserving titanium for the structural frame and case only.
Sapphire glass covers both displays. Both watches are built to handle real abuse, but the Ultra's all-around titanium construction is the more durable package for extended trail use.
The Pro is lighter (45.6g vs 52g), which you'll notice on shorter road runs. For marathon and shorter trail efforts, the Pro's weight advantage is meaningful. For 50+ mile efforts where you're wearing the watch for 10+ hours straight, the Ultra's slightly heavier build is worth the trade-off for the larger battery and more robust construction.
The Ultra's wider 22mm strap (vs the Pro's 20mm) distributes pressure more evenly over long efforts and feels more secure on technical terrain. Both straps use standard pin buckles.
Which One Should You Buy?
Go Ultra if:
- You're running trail races or ultramarathons.
- You need offline maps and navigation for remote terrain.
- Maximum storage for maps and music matters to you.
- You want the biggest display available for data-heavy training pages.
- Two extra hours of GPS battery makes a real difference for your goals.
Go Pro if:
- You're primarily a road runner training for marathons or shorter distances.
- You want titanium and sapphire build quality at a lower price point.
- Lighter weight matters more to you than extra battery life.
- You don't need offline maps or maximum storage.
- You're okay with 31 hours of GPS. This covers essentially every road marathon and most 50K races.
The Bottom Line
Amazfit split the Cheetah 2 line into two genuinely different watches for two genuinely different runners. The Pro isn't a compromise. It's the right tool for road-focused training. The Ultra isn't a gimmick. It's the right tool for runners who need to go longer, navigate harder terrain, and have navigation data when they're 30 miles from the nearest cell tower.
If that sounds like your running, the $150 premium for the Ultra is money well spent. If it doesn't, the Pro delivers 95% of the performance at a friendlier price.