GPS Running Watches / Amazfit T-Rex 3 Pro (48mm) vs COROS PACE 4 (silicone band)
Amazfit T-Rex 3 Pro (48mm) vs COROS PACE 4 (silicone band)
COROS PACE 4 (silicone band)
Multiband GPS and 31 hours of it for $249 — the value benchmark of the category.
Wins overall by 0.2 points
Quick Verdict
The COROS PACE 4 (silicone band) wins by 0.2 points, which is not enough to settle it. Flagship materials, maps and 38 h of dual-band GPS for $399 — with clumsy map downloads. Pick on the specs that matter to you, not the overall score.
The Amazfit T-Rex 3 Pro (48mm) and COROS PACE 4 (silicone band) are both current-generation GPS Running Watch models, and the COROS PACE 4 (silicone band) is $151 cheaper than the Amazfit T-Rex 3 Pro (48mm) ($249 vs $399.99). On Navigation & Maps, the Amazfit T-Rex 3 Pro (48mm) leads (7.2 vs 3.5/10) — real routable offline topographic maps versus a breadcrumb line, plus how painful it is to get maps onto the watch.. On Build & Comfort, the COROS PACE 4 (silicone band) leads (9.0 vs 6.4/10) — case materials, lens (sapphire vs glass), weight on the wrist and durability ratings.. On Display, the Amazfit T-Rex 3 Pro (48mm) leads (9.5 vs 8.3/10) — brightness, resolution and daylight readability, weighing AMOLED sharpness against MIP's always-on-for-free behaviour.. Overall, the COROS PACE 4 (silicone band) scores 7.8/10 across our 8 scoring categories versus 7.6/10 for the Amazfit T-Rex 3 Pro (48mm), though the gap is close enough that your specific use case should decide it. Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Amazfit T-Rex 3 Pro (48mm) | COROS PACE 4 (silicone band) |
|---|---|---|
| Price | $399.99 | $249.00 |
| Release Year | 2025 | 2025 |
| Display | 1.5-in AMOLED, up to 3,000 nits, sapphire crystal lens, optional always-on | 1.2-in 390x390 AMOLED touchscreen with digital crown, optional always-on |
| Smartwatch Battery ( days) | 25✓ | 19 |
| Always-On Display Cost | Amazfit's 25-day figure is typical use; heavy use is rated 10 days and one reviewer measured about 18 days alongside 14 h of accurate GPS. Amazfit does not publish a separate always-on display figure. | 6 days with always-on display — always-on costs 13 of the 19 headline days, and cuts all-systems GPS from 41 h to 30 h and dual-frequency from 31 h to 24 h |
| Battery, Single-Band GPS ( h) | 85✓ | 41 |
| Battery, Multiband GPS ( h) | 38✓ | 31 |
| GNSS Bands | Dual-band (L1+L5) circularly-polarised GNSS. The 85 h headline is the power-saving GPS mode; the accurate dual-band mode is 37-38 h on the 48 mm and about 29 h on the 44 mm. | Dual-frequency L1+L5 across GPS, GLONASS, Galileo, BeiDou and QZSS. Rare at this price — the similarly-priced Forerunner 170 is single-band. |
| Onboard Maps | Free offline contour maps with turn-by-turn, POI search, round-trip routing and auto-rerouting — but you must select and download each map region inside the Zepp phone app and transfer it across. Android Police called the process 'messy and time-consuming' with vague instructions. | None. Breadcrumb navigation only, from GPX or routes synced from Strava, Komoot, RideWithGPS or Wikiloc. No offline base map. |
| Music Storage | Onboard storage for sideloaded MP3 files played to Bluetooth headphones. No Spotify and no streaming services. | 4 GB for sideloaded MP3s played to Bluetooth headphones. No Spotify and no other streaming service. |
| Training Platform & Subscription | The Zepp app and core training/recovery metrics are free. Zepp Aura, the AI sleep and coaching layer, is a paid subscription; the training data itself is not gated behind it. | COROS app and EvoLab (Training Load, Base Fitness, Fatigue, Running Fitness) are free with no paid tier at all. Metrics are COROS' own, not Firstbeat-licensed. |
| External Sensor Support | Bluetooth only — no ANT+. BLE chest straps and Stryd pods pair through Zepp OS. | Bluetooth only — no ANT+. BLE chest straps, Stryd pods and power meters pair normally. |
| Data Export | Free sync to Strava, adidas Running, Apple Health and Google Health Connect, plus a TrainingPeaks Zepp OS app; .FIT export via the Zepp app | Free .FIT and GPX export from the COROS app, plus automatic sync to Strava, TrainingPeaks, Nike Run Club, Apple Health and Health Connect. |
| Warranty | 12 months | 24 months |
| Colors | Black | Black Crystal, Cloud White |
Category Scores
GPS Accuracy
The COROS PACE 4 (silicone band) is marginally ahead, 8.2 to 7.8. A gap this small rarely decides a purchase on its own, though it counts if trace quality in cities and under tree cover — multiband L1+L5 hardware plus what independent testers measured in the real world. is your priority.
Battery Honesty
The COROS PACE 4 (silicone band) leads clearly here, 8.4 against 7.6 — a 0.8-point margin on how much of the headline battery claim survives the mode you would actually train in: all-systems plus multiband, always-on display, music playing. The number on the box is almost always the slowest, least accurate mode.. If that is what you are buying for, the Amazfit T-Rex 3 Pro (48mm) does not close the gap elsewhere.
Training & Recovery
The COROS PACE 4 (silicone band) leads clearly here, 7.6 against 6.8 — a 0.8-point margin on depth of load, readiness and recovery analysis, and how much of it is free rather than gated behind a subscription or an extra chest strap.. If that is what you are buying for, the Amazfit T-Rex 3 Pro (48mm) does not close the gap elsewhere.
Heart Rate
The COROS PACE 4 (silicone band) leads clearly here, 7.8 against 6.8 — a 1.0-point margin on optical wrist accuracy during intervals and burst efforts, and whether the watch pairs with ANT+ and/or Bluetooth chest straps as a fix.. If that is what you are buying for, the Amazfit T-Rex 3 Pro (48mm) does not close the gap elsewhere.
Display
The Amazfit T-Rex 3 Pro (48mm) leads clearly here, 9.5 against 8.3 — a 1.2-point margin on brightness, resolution and daylight readability, weighing AMOLED sharpness against MIP's always-on-for-free behaviour.. If that is what you are buying for, the COROS PACE 4 (silicone band) does not close the gap elsewhere.
Build & Comfort
The COROS PACE 4 (silicone band) leads clearly here, 9.0 against 6.4 — a 2.6-point margin on case materials, lens (sapphire vs glass), weight on the wrist and durability ratings.. If that is what you are buying for, the Amazfit T-Rex 3 Pro (48mm) does not close the gap elsewhere.
Value
The COROS PACE 4 (silicone band) is marginally ahead, 9.4 to 9.0. A gap this small rarely decides a purchase on its own, though it counts if what the watch delivers per dollar against everything else in the comparison at the moment of purchase. is your priority.
Best For
Choose the Amazfit T-Rex 3 Pro (48mm) if…
- • Navigation & Maps matters most to you — the Amazfit T-Rex 3 Pro (48mm) scores 7.2/10 here (real routable offline topographic maps versus a breadcrumb line, plus how painful it is to get maps onto the watch.).
- • Display matters most to you — the Amazfit T-Rex 3 Pro (48mm) scores 9.5/10 here (brightness, resolution and daylight readability, weighing AMOLED sharpness against MIP's always-on-for-free behaviour.).
- • Your main use case is trail-ultra or hiking-navigation.
Choose the COROS PACE 4 (silicone band) if…
- • Build & Comfort matters most to you — the COROS PACE 4 (silicone band) scores 9.0/10 here (case materials, lens (sapphire vs glass), weight on the wrist and durability ratings.).
- • Heart Rate matters most to you — the COROS PACE 4 (silicone band) scores 7.8/10 here (optical wrist accuracy during intervals and burst efforts, and whether the watch pairs with ANT+ and/or Bluetooth chest straps as a fix.).
- • Battery Honesty matters most to you — the COROS PACE 4 (silicone band) scores 8.4/10 here (how much of the headline battery claim survives the mode you would actually train in: all-systems plus multiband, always-on display, music playing. The number on the box is almost always the slowest, least accurate mode.).
- • You want to spend less — it's $151 cheaper.
- • Your main use case is road-running or triathlon.
Pros & Cons
Amazfit T-Rex 3 Pro (48mm)
Pros
- +38 h of dual-band GPS and 25 days of typical use for $399.99 — Garmin charges $1,199.99 for 30 h of multiband
- +A 3,000-nit AMOLED behind sapphire with a titanium-alloy bezel at half the price of rivals with those materials
- +Free offline contour maps with genuine auto-rerouting, which even the $749.99 Forerunner 970 does not beat on price
- +10 ATM plus EN13319 freediving certification to 45 m, unusual at any price
Cons
- −Maps must be picked and downloaded region-by-region in the Zepp phone app then transferred — reviewers describe the process as messy and poorly documented
- −The 85 h battery headline is the power-saving GPS mode; the dual-band mode you would actually race on is 38 h
- −No ANT+ and no Spotify or any streaming service — sideloaded MP3 only
- −Zepp's software ecosystem and analytics are a clear step behind Garmin and COROS, and the app is cluttered
- −48 mm and chunky; reviewers found it too bulky for 24-hour wear
COROS PACE 4 (silicone band)
Pros
- +Dual-frequency L1+L5 GNSS at $249 — the single biggest accuracy upgrade you can buy at this price
- +31 h in the most accurate GPS mode still beats what most $500 AMOLED watches manage
- +32 g on the nylon band; you forget it is there on a long run
- +No subscription anywhere in the COROS ecosystem, and .FIT files sync free to Strava and TrainingPeaks
- +DC Rainmaker found the optical HR 'spot-on' through intervals — unusual for a $249 watch
Cons
- −No offline maps at all — breadcrumb trails only, which is a real limitation off-road
- −No ANT+, so ANT+-only power meters and older chest straps will not pair
- −Music is sideloaded MP3 only; there is no Spotify, no streaming, no phone-music control
- −Always-on display costs 13 of the 19 claimed smartwatch days and 10 h of GPS time
- −Training Load resets every Monday rather than rolling, which DC Rainmaker notes does not match recovery physiology
Shop by Need
FAQs
Is the Amazfit T-Rex 3 Pro (48mm) or COROS PACE 4 (silicone band) better overall?+
Based on our 8-category scoring, the COROS PACE 4 (silicone band) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Navigation & Maps, the Amazfit T-Rex 3 Pro (48mm) or the COROS PACE 4 (silicone band)?+
The Amazfit T-Rex 3 Pro (48mm) scores higher on Navigation & Maps (7.2/10 vs 3.5/10) — real routable offline topographic maps versus a breadcrumb line, plus how painful it is to get maps onto the watch..
Which is better for Build & Comfort, the Amazfit T-Rex 3 Pro (48mm) or the COROS PACE 4 (silicone band)?+
The COROS PACE 4 (silicone band) scores higher on Build & Comfort (9.0/10 vs 6.4/10) — case materials, lens (sapphire vs glass), weight on the wrist and durability ratings..
Which is better for Display, the Amazfit T-Rex 3 Pro (48mm) or the COROS PACE 4 (silicone band)?+
The Amazfit T-Rex 3 Pro (48mm) scores higher on Display (9.5/10 vs 8.3/10) — brightness, resolution and daylight readability, weighing AMOLED sharpness against MIP's always-on-for-free behaviour..
Which is better for Heart Rate, the Amazfit T-Rex 3 Pro (48mm) or the COROS PACE 4 (silicone band)?+
The COROS PACE 4 (silicone band) scores higher on Heart Rate (7.8/10 vs 6.8/10) — optical wrist accuracy during intervals and burst efforts, and whether the watch pairs with ANT+ and/or Bluetooth chest straps as a fix..
Is the Amazfit T-Rex 3 Pro (48mm) worth the price difference over the COROS PACE 4 (silicone band)?+
The COROS PACE 4 (silicone band) is the cheaper option at $249 versus $399.99. Whether the pricier model is "worth it" depends on how much you value its lead in Navigation & Maps.
Which is better suited to my use case?+
The Amazfit T-Rex 3 Pro (48mm) is the better fit if you mainly care about trail-ultra or hiking-navigation. The COROS PACE 4 (silicone band) is the better fit for road-running or triathlon.
What's the warranty on the Amazfit T-Rex 3 Pro (48mm) vs the COROS PACE 4 (silicone band)?+
The Amazfit T-Rex 3 Pro (48mm) ships with a 12-month warranty; the COROS PACE 4 (silicone band) ships with a 24-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Garmin Forerunner 170 (43mm) — $299.99
Premium Option
Garmin Forerunner 170 (43mm) — $299.99
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.