GPS Running Watches / Suunto Vertical 2 (stainless steel) vs Polar Grit X2 (45mm)
Suunto Vertical 2 (stainless steel) vs Polar Grit X2 (45mm)
Suunto Vertical 2 (stainless steel)
The AMOLED that finally posts MIP-class multiband battery — 65 hours, free world maps.
Wins overall by 1.1 points
Quick Verdict
A 1.1-point gap makes the Suunto Vertical 2 (stainless steel) the straightforward choice here. The AMOLED that finally posts MIP-class multiband battery — 65 hours, free world maps.
The Suunto Vertical 2 (stainless steel) and Polar Grit X2 (45mm) are both current-generation GPS Running Watch models, and the Suunto Vertical 2 (stainless steel) is $201 cheaper than the Polar Grit X2 (45mm) ($599 vs $799.99). On Value, the Suunto Vertical 2 (stainless steel) leads (8.6 vs 4.8/10) — what the watch delivers per dollar against everything else in the comparison at the moment of purchase.. On Heart Rate, the Suunto Vertical 2 (stainless steel) leads (7.6 vs 5.0/10) — optical wrist accuracy during intervals and burst efforts, and whether the watch pairs with ANT+ and/or Bluetooth chest straps as a fix.. On Battery Honesty, the Suunto Vertical 2 (stainless steel) leads (8.2 vs 6.0/10) — 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.. Overall, the Suunto Vertical 2 (stainless steel) scores 8.2/10 across our 8 scoring categories versus 7.1/10 for the Polar Grit X2 (45mm). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Suunto Vertical 2 (stainless steel) | Polar Grit X2 (45mm) |
|---|---|---|
| Price | $599.00 | $799.99 |
| Release Year | 2025 | 2025 |
| Display | 1.5-in 466x466 LTPO AMOLED, ~2,000 nits, sapphire lens, optional always-on | 1.28-in 416x416 AMOLED with sapphire lens, optional always-on |
| Smartwatch Battery ( days) | 20✓ | 7 |
| Always-On Display Cost | Suunto does not publish a separate always-on smartwatch number; DC Rainmaker measured about 50 h of real use with dual-frequency, always-on display and navigation all running against a 65 h claim | Polar does not publish a separate always-on smartwatch figure in the sources reviewed; the headline 7 days is already the shortest smartwatch runtime in this comparison |
| Battery, Single-Band GPS ( h) | 75 | 90✓ |
| Battery, Multiband GPS ( h) | 65✓ | 30 |
| GNSS Bands | Dual-band L1+L5 Sony chipset. Four published tiers: 65 h Performance (dual-band), 75 h Endurance (single-band all systems), 110 h Ultra (single-band, wrist HR off) and 250 h Tour (GPS only, 2-minute logging). | Dual-frequency GNSS (GPS, GLONASS, Galileo, BeiDou, QZSS). The 90 h figure is Eco training mode with reduced fixes; 30 h is the full Performance mode with GPS and wrist HR running. |
| Onboard Maps | Free worldwide offline maps in 32 GB, downloadable over Wi-Fi without pre-loading, with turn-by-turn (which must be enabled manually for third-party routes) and automatic climb guidance. Practically limited to roughly 10-12 stored routes despite the 32 GB. | Offline TOPO maps for North America and Europe preloaded, with contour and POI layers; other regions download free. No on-device rerouting, and the compass must be calibrated before navigation. |
| Music Storage | None. No on-device storage and no streaming; Bluetooth headphones are supported for turn prompts only. | None. The watch controls phone music only — there is no on-device storage and no streaming. |
| Training Platform & Subscription | Suunto app is free with no subscription tier; analytics are Suunto's own | Polar Flow app and web are genuinely free with no paid tier. Training Load Pro, Nightly Recharge, Sleep Plus Stages and FitSpark are Polar's own science, not Firstbeat-licensed. |
| External Sensor Support | Bluetooth with multiple simultaneous saved sensor pairings — no ANT+ | Bluetooth LE only — no ANT+, so ANT+-only power meters and older straps will not pair. A Polar H10 chest strap is the recommended fix for the wrist sensor. |
| Data Export | Free .FIT export and automatic sync to Strava, TrainingPeaks, Komoot and 300+ partner apps | Free .FIT/TCX/GPX export from Polar Flow plus automatic sync to Strava, TrainingPeaks and Komoot |
| Warranty | 24 months | 24 months |
| Colors | All Black | Black |
Category Scores
GPS Accuracy
The Suunto Vertical 2 (stainless steel) leads clearly here, 8.8 against 8.0 — a 0.8-point margin on trace quality in cities and under tree cover — multiband L1+L5 hardware plus what independent testers measured in the real world.. If that is what you are buying for, the Polar Grit X2 (45mm) does not close the gap elsewhere.
Battery Honesty
The Suunto Vertical 2 (stainless steel) leads clearly here, 8.2 against 6.0 — a 2.2-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 Polar Grit X2 (45mm) does not close the gap elsewhere.
Training & Recovery
The Polar Grit X2 (45mm) leads clearly here, 8.2 against 7.4 — 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 Suunto Vertical 2 (stainless steel) does not close the gap elsewhere.
Heart Rate
The Suunto Vertical 2 (stainless steel) leads clearly here, 7.6 against 5.0 — a 2.6-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 Polar Grit X2 (45mm) does not close the gap elsewhere.
Display
The Suunto Vertical 2 (stainless steel) leads clearly here, 9.4 against 8.8 — a 0.6-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 Polar Grit X2 (45mm) does not close the gap elsewhere.
Build & Comfort
The Polar Grit X2 (45mm) leads clearly here, 8.8 against 7.0 — a 1.8-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 Suunto Vertical 2 (stainless steel) does not close the gap elsewhere.
Value
The Suunto Vertical 2 (stainless steel) leads clearly here, 8.6 against 4.8 — a 3.8-point margin on what the watch delivers per dollar against everything else in the comparison at the moment of purchase.. If that is what you are buying for, the Polar Grit X2 (45mm) does not close the gap elsewhere.
Best For
Choose the Suunto Vertical 2 (stainless steel) if…
- • Value matters most to you — the Suunto Vertical 2 (stainless steel) scores 8.6/10 here (what the watch delivers per dollar against everything else in the comparison at the moment of purchase.).
- • Heart Rate matters most to you — the Suunto Vertical 2 (stainless steel) scores 7.6/10 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 Suunto Vertical 2 (stainless steel) scores 8.2/10 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.).
- • Navigation & Maps matters most to you — the Suunto Vertical 2 (stainless steel) scores 8.6/10 here (real routable offline topographic maps versus a breadcrumb line, plus how painful it is to get maps onto the watch.).
- • You want to spend less — it's $201 cheaper.
Choose the Polar Grit X2 (45mm) if…
- • Build & Comfort matters most to you — the Polar Grit X2 (45mm) scores 8.8/10 here (case materials, lens (sapphire vs glass), weight on the wrist and durability ratings.).
- • Your main use case is road-running.
Pros & Cons
Suunto Vertical 2 (stainless steel)
Pros
- +65 h of dual-band GPS on an AMOLED watch — no other AMOLED here comes close in the accurate mode
- +Free worldwide offline maps in 32 GB, downloaded straight over Wi-Fi with no cable and no charge
- +A bright LTPO AMOLED behind sapphire, plus a bezel-integrated flashlight, for $599
- +DC Rainmaker rates GPS accuracy excellent across difficult terrain
Cons
- −87 g in the steel version reviewed here — the titanium at $699 saves 13 g
- −No music storage of any kind on a $599 watch
- −Only about 10-12 routes can be stored in practice despite 32 GB, and turn-by-turn needs manual enabling for imported routes
- −Real-world dual-frequency runtime with always-on and navigation running measured about 50 h, not 65 h
- −Bluetooth only — no ANT+ sensor support
Polar Grit X2 (45mm)
Pros
- +Preloaded free offline TOPO maps for North America and Europe, with sapphire and a steel bezel
- +Polar Flow is completely free — no subscription tier exists, unlike Garmin Connect+
- +62 g with strap and MIL-STD-810H tested, one of the most comfortable big outdoor watches here
- +ECG, SpO2 and skin temperature on top of Polar's well-regarded Nightly Recharge recovery model
Cons
- −DC Rainmaker's optical HR testing was damning: it 'missed every single interval' on 400 m repeats and recorded 3,100 m for a ~1,900 m open-water swim. Budget for an H10 chest strap.
- −7 days of smartwatch battery is the shortest in this comparison, and 30 h in full Performance mode is beaten by a $249 Coros
- −No music storage at all on a $799.99 watch
- −Bluetooth only — no ANT+ support
- −Navigation demands a compass calibration first, and turn-by-turn has to be switched on manually after picking a route
Shop by Need
FAQs
Is the Suunto Vertical 2 (stainless steel) or Polar Grit X2 (45mm) better overall?+
Based on our 8-category scoring, the Suunto Vertical 2 (stainless steel) 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 Value, the Suunto Vertical 2 (stainless steel) or the Polar Grit X2 (45mm)?+
The Suunto Vertical 2 (stainless steel) scores higher on Value (8.6/10 vs 4.8/10) — what the watch delivers per dollar against everything else in the comparison at the moment of purchase..
Which is better for Heart Rate, the Suunto Vertical 2 (stainless steel) or the Polar Grit X2 (45mm)?+
The Suunto Vertical 2 (stainless steel) scores higher on Heart Rate (7.6/10 vs 5.0/10) — optical wrist accuracy during intervals and burst efforts, and whether the watch pairs with ANT+ and/or Bluetooth chest straps as a fix..
Which is better for Battery Honesty, the Suunto Vertical 2 (stainless steel) or the Polar Grit X2 (45mm)?+
The Suunto Vertical 2 (stainless steel) scores higher on Battery Honesty (8.2/10 vs 6.0/10) — 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..
Which is better for Build & Comfort, the Suunto Vertical 2 (stainless steel) or the Polar Grit X2 (45mm)?+
The Polar Grit X2 (45mm) scores higher on Build & Comfort (8.8/10 vs 7.0/10) — case materials, lens (sapphire vs glass), weight on the wrist and durability ratings..
Is the Suunto Vertical 2 (stainless steel) worth the price difference over the Polar Grit X2 (45mm)?+
The Suunto Vertical 2 (stainless steel) is the cheaper option at $599 versus $799.99. Whether the pricier model is "worth it" depends on how much you value its lead in Value.
Which is better suited to my use case?+
The Suunto Vertical 2 (stainless steel) is the better fit if you mainly care about long-battery. The Polar Grit X2 (45mm) is the better fit for road-running.
What's the warranty on the Suunto Vertical 2 (stainless steel) vs the Polar Grit X2 (45mm)?+
The Suunto Vertical 2 (stainless steel) ships with a 24-month warranty; the Polar Grit X2 (45mm) 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
COROS VERTIX 2S (50mm) — $699.00
Premium Option
COROS VERTIX 2S (50mm) — $699.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.