SAVE $170: The Apple Watch Ultra (49mm, GPS + cellular) is just $629 at Best Buy, down from its regular price of $799. That's a 21% discount.

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Opens in a new windowCredit: AppleApple Watch Ultra (49mm, GPS + cellular)

If your lifestyle involves mountain adventures, exploring the underwater world while scuba diving, or off-the-map expeditions that rely on GPS, you might have noticed that not all smartwatches can keep up. If you've been let down by a fitness watch in the past, the Apple Watch Ultra might be the one for you, and there's a great deal at Best Buy today.

As of Jan. 11, the Apple Watch Ultra is just $629 at Best Buy, down from its regular price of $799. That's a savings of $170, or 21%.

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The Apple Watch Ultra is designed for the most rugged of adventures. The watch is built with titanium and combines durability with a lightweight design. The Ultra's face features a super-bright Always‑On Retina display of 2000 nits, which is twice as bright as some other Apple Watch models.

SEE ALSO:The Apple Watch SE is still under $200, plus more Apple Watch deals this week

When it comes to wayfinding, the GPS antenna uses dual frequency for better accuracy when you need it most. Should you take a wrong turn, the watch's siren projects an 86-decibel sound pattern to attract help, heard up to 600 feet away.

If normal fitness watches can't keep up with your adventures, the Apple Watch Ultra is up for being your reliable companion. Take advantage of this deal while it lasts.