The best Suunto watch: the solar one, the map one, and the one with no battery to charge

The whole Suunto line, in one table

Suunto is the easiest outdoor brand to shop, because the useful part of the catalogue is three watches with three different answers to the power question. That is also why this page ranks three rather than ten: we only rank watches we can cite a maker's spec page for, and padding a list with references nobody should buy is how affiliate pages lose their usefulness.

Why anyone buys Suunto over Garmin

One reason, and it is a good one: materials for the money. Both Verticals are sapphire with a titanium bezel. The Garmin that competes with them on price, the Instinct 3 Solar, is a fibre-reinforced polymer case with a metal-reinforced bezel and a lens Garmin describes only as "scratch-resistant" without naming sapphire. We do not flag the Instinct as sapphire for exactly that reason, and the difference is explained in sapphire vs Gorilla Glass.

The second reason is weight. 74 g for a 100 m sapphire-and-titanium GPS watch with a solar lens is genuinely light for what it is, and Suunto publishes the number. The third is that Suunto states its battery figures in a single readable table instead of across four support pages.

The solar one is the decade buy

On this site the power system is scored first, because it is the part that ages fastest and the part that ends the watch. The Vertical Titanium Solar is the only Suunto that addresses it. Suunto's own figures: up to 30 days of daily use, up to 60 days with solar; standby up to 60 days, up to a year with solar; up to 65 hours of multi-band GPS, 90 with solar; up to 90 hours single-band, 140 with solar; and up to 500 hours in power-saving GNSS modes.

Read that again for what it means in ownership rather than in specification. A watch worn outside rarely reaches a charger, which means the lithium cell inside cycles a handful of times a year instead of a hundred, which is the single biggest factor in whether a GPS watch is still useful in 2036. The same logic is why the Garmin solar models win their categories, and it is laid out in best solar GPS watches.

It also uses a MIP display, which is the right call for this watch. MIP is reflective: the brighter the ambient light, the more readable it gets, and it costs almost nothing to leave on. That is why the solar Vertical can quote a 30-day figure and the AMOLED Vertical 2 quotes 20.

The map one, and what AMOLED costs

The Vertical 2 Titanium is Suunto's flagship and the better watch if you navigate off a screen. A 1.5-inch, 466 by 466 LTPO AMOLED under sapphire, offline maps, a flashlight, five GNSS constellations, and a titanium bezel on a glass-fibre-reinforced polyamide case at 87 g.

What the colour screen costs, in Suunto's own numbers: 20 days of daily use instead of 30, 40 days of standby instead of 60, 65 multi-band GPS hours with no solar extension at all, and 13 extra grams. If you are buying a watch for the next decade and not for the next hike, that is a real price. If you are standing in fog trying to read a contour line, it is money well spent. The general version of this argument is in MIP vs AMOLED battery life.

The one with no battery to charge

The Core Alpha is a different product category wearing the same badge. No GPS, no charging, no app: an altimeter, a barometer and a compass with adjustable declination, on a CR2032 that Suunto rates at up to 12 months in time mode, in a 67 g composite case with an aluminium bezel.

Two things make it genuinely interesting rather than merely cheap. The first is the night-vision-goggle-compatible red backlight, which is why it turns up on light-discipline lists; it is the reason we rank it in best ABC watches. The second is that a coin cell is the most serviceable power source there is: any watchmaker, any decade, a few dollars.

Its limits are published and worth respecting. The lens is mineral, not sapphire. The rating is 30 m, which Suunto describes as suitable for shallow snorkelling to 10 m, so this is not a wading or diving watch. And a barometric altimeter drifts with the weather, which is a property of the technology rather than a fault, and is covered in ABC watch explained.

The honest case against Suunto

Three things, stated plainly, because a page that only praises a brand is not useful.

Only one model has solar. Suunto's newest flagship, the Vertical 2, dropped the solar lens in favour of the AMOLED. On a site that ranks power independence first, that is a step backwards, and it is the reason the older solar model is ranked above the newer flagship here.

The ecosystem is smaller. Fewer third-party apps, fewer watch faces, a smaller used market and fewer independent repairers than Garmin or Casio. For a buy-it-for-life purchase, serviceability in year eight matters, and Garmin's scale is a real advantage there.

No MIL-STD-810 claim. Suunto does not use the line on these watches, so we do not flag it. The Instinct 3 and the fenix 8 both do, in their makers' own words, and the standard is explained in MIL-STD-810 watches explained.

The decade pick

How to choose between the three

1. Answer the power question first. Solar lens or colour screen. You cannot have both in Suunto's current line, and the solar one is the better ten-year watch.

2. Decide if you actually navigate off a screen. If you follow a route on a map, buy the Vertical 2. If you follow a bearing and a breadcrumb, the MIP solar model is better in every other respect.

3. Check the water rating against your use. Both Verticals are 100 m. The Core Alpha is 30 m, which Suunto describes as shallow snorkelling to 10 m.

4. Weigh it, literally. 67 g, 74 g and 87 g are three noticeably different watches on a thin wrist. Suunto publishes all three figures.

5. Price the materials, not the badge. Sapphire and titanium at this money is the actual reason to choose Suunto. If you are being offered a Suunto without both, compare it against a Garmin again.