I've tested dozens of rugged smartwatches - this one's battery is on a different level

https://www.zdnet.com/a/img/resize/71783ed6df78d278d5faf9cf652362d567587a5f/2026/08/19/b56d3ea9-66b8-4eda-a55f-a3b7b6eed2d7/suunto-core-26.jpg?auto=webp&fit=crop&height=675&width=1200

Suunto Core 24.5 / 5Very good

pros and cons

  • Up to 15 months of battery life.
  • Features an altimeter, barometer, and compass.
  • Has weather trends and storm alerts.
  • Accurate step counting.
  • Reasonable price.
  • No heart rate sensor

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There are lots of new smartwatches available right now, with two days of battery life often earning high praise. In contrast to those limits, the Suunto Core 2 ups the ante with some of the longest battery life of any sports watch on the market. I've been wearing this model over the past month and come to appreciate both the marathon battery and key metrics that support my summer outdoor adventures.

Also: I tested the best sports watches in 2026: Here are the latest and greatest watches, no matter your budget

There are some trade-offs, though. Since there is no heart...

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