The new Suunto 9 Peak is the brand’s thinnest fully featured sports watch to date. (Photo: Courtesy Suunto)

Two Months with the Suunto 9 Peak

It’s one of the lightest, thinnest adventure-sport watches on the market. Here’s what our editor thought.

Lock Icon

Join O+ to unlock this story.

Already have an Outside Account? Sign in

Outside+ Logo

Intro Offer
$3.99 / month*

  • World-class journalism from publications like Outside, Ski, Trail Runner, Climbing, and Backpacker.
  • Annual print subscription to Outside Magazine + 2 Gear Guides.
  • Outside Watch – Award-winning adventure films, documentaries, and series.
  • Gaia GPS – Premium backcountry navigation app.
  • Trailforks – Discover trails around the globe.
  • Outside Learn – Expert-led online classes on climbing, cooking, skiing, fitness, and beyond.
Join Outside+
Outside Online

Intro Offer
$2.99 / month*

  • Access to member-exclusive content & bonus features on
  • Ad-free access to
Join Outside

*Outside memberships are billed annually. You may cancel your membership at anytime, but no refunds will be issued for payments already made. Upon cancellation, you will have access to your membership through the end of your paid year. More Details

A couple months ago, I got my hands on the new Suunto 9 Peak, the brand’s thinnest fully featured sports watch to date. As someone with small wrists, who routinely struggles to get big, clunky wearables to fit right, I was intrigued: could such a small watch actually match the capability of those heftier models? The short answer: almost. The longer answer: it misses a few things, but makes up for it in other significant ways, and has officially become my watch of choice.

The biggest sacrifice is battery life. Suunto claims that the 9 Peak lasts seven days in regular daily heart-rate tracking mode and 25 hours in “performance” GPS mode (three other battery modes allow you to select less-frequent GPS pings in exchange for longer battery life). However, I found that one Saturday in daily tracking mode plus a two-hour long run was enough to bring the battery from 100 percent down to 30. When I switched to a more battery-conscious mode, I got two of those days back-to-back before needing a recharge.

Regardless, I simply got into the habit of plugging it in overnight. A few times, I forgot and woke up to a battery around 15 percent. But my frustration was short-lived, because the included magnetic charging plate is scary fast. One morning, I watched my 9 Peak go from five percent up to 25—plenty for a 40-minute workout—in the span of about ten minutes. If you wanted to keep it on all night for the sleep-tracking metrics, you could get away with simply plugging it in while you get ready for bed, and get most of the way to a full battery.

Would I choose this watch for situations where I’d need it to run without a re-charge for more than 30-plus hours? Probably not. Would I choose it for an ultra-distance race with regularly spaced aid stations where I’d have a crew carrying a battery pack? You bet. In other words, I’d use it for pretty much anything other than a very long, unsupported adventure.

In every other way, the 9 Peak is just like other Suunto watches you’re probably familiar with. It has a blood-oxygen sensor, wrist-based heart rate tracking, customizable sport modes, a barometric altimeter, route mapping (through the app, available for iOS or Android), and a touch-screen interface that works well even when you’re sweaty. All that in a thin, light, sleek silhouette that’s comfortable and slick-looking enough to wear all day. Most importantly, I can dial in a snug fit on my small wrists without having to practically cut off circulation.

Lead Photo: Courtesy Suunto

When you buy something using the retail links in our stories, we may earn a small commission. We do not accept money for editorial gear reviews. Read more about our policy.

promo logo