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Apple Watch Series 9 vs. Ultra 2: What are the differences?

A deep dive into how the two Apple watches differ.
 By 
Alex Perry
 on 
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A composite image that pits the Apple Watch Series 9 against the Ultra 2
How does the Apple Watch Series 9 differ from the Ultra 2? Credit: Mashable Composite / Apple

Table of Contents

It's time for a good ol' Apple Watch Series 9 vs. Apple Watch Ultra 2 face-off.

It's not really in dispute that Apple makes some of the best smartwatches around, but which one is right for you?

As usual, that depends on multiple factors like features, battery life, and perhaps most importantly, price. The Apple Watch Series 9 and Ultra 2 are both excellent choices, but they're for different groups of people.


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One is more of a general-use device while the other is definitely geared toward the more adventurous among us. Here's how the Apple Watch Series 9 and Ultra 2 compare to each other.

Apple Watch Series 9 vs. Ultra 2: price

As one might expect, the Series 9 is a good deal cheaper than the Ultra 2. You can find the former for $399, but it's often regularly discounted.

It comes in two models: a variant with a 41mm case size and a configuration with a 45mm case size.

Apple Watch Series 9
Apple Watch Series 9 looks really good on Mashable's Stan Schroeder. Credit: Kimberly Gedeon / Mashable

There are, of course, some hidden costs with the Series 9 that aren't present with the Ultra 2, which comes with all the possible bells and whistles you could want. With Series 9, adding extra flourishes like a stainless-steel case (the default is aluminum) and cellular LTE coverage can balloon the total cost up to a staggering $749, the same ballpark as the Ultra 2.

The Apple Watch Ultra 2, on the other hand, only offers a 49mm case size — and has a starting price of $799.99.

Winner: Series 9

Apple Watch Series 9 vs. Ultra 2: design

Apple Watch is arguably the most customizable product Apple sells, with a variety of case materials, colors, and watch bands to choose from.

Apple Watch Ultra 2 depth sensing information
Depth sensing! Credit: Apple

For this category, we'll just stick with the inherent design features of each device because going through every single permutation would take forever.

Unsurprisingly, Ultra 2 is one step ahead. Its titanium case is going to be more durable than the aluminum and stainless steel options on Series 9, though that may not matter if you're not a hiker or athlete. Meanwhile, the Ultra 2's 49mm case is slightly bigger than the 45mm or 41mm varieties of the Series 9. This means the display is also ever-so-slightly larger, offering more screen real estate than the Series 9.

The real secret weapon in the Ultra 2's arsenal, though, is the programmable action button on the watch's side.

Apple Watch Series 9 colors and bands
You can really trick out your Apple Watch. Credit: Apple

You can make it activate pretty much any app shortcut you want — the Series 9 doesn't have this button at all. It's arguably the one feature the Ultra 2 has that is useful to everyone, not just people who enjoy hiking, so it's a bummer that the Series 9 doesn't have it.

Winner: Ultra 2

Apple Watch Series 9 vs. Ultra 2: features

A look at Apple's official comparison website for the different Apple Watch models is illuminating. Despite the big difference in (starting) price, these two devices have almost all of the same basic features.

Apple Watch Series 9
Ultra 2 has a slight edge over the Watch Series 9 (pictured) with its feature set. Credit: Stan Schroeder / Mashable

For instance, both (obviously) support Siri and the new Double Tap feature. Health features are also the same across the board, with both watches supporting blood oxygen monitoring, ECG, heart rate notifications, skin temperature sensing, and cycle tracking.

The differences lie in the margins, and of course, the Ultra wins again by default. It comes with LTE built-in (it's an optional add-on for Series 9) and can sink to a depth of 100m underwater, 50m more than Series 9. It's also got a depth gauge and water temperature sensor, so diving fanatics don't have much of a choice here. Oh, and there's an emergency siren on Ultra 2 for, well, emergencies. The Series 9 doesn't have that.

Winner: Ultra 2

Apple Watch Series 9 vs. Ultra 2: battery life

The easiest category yet.

Apple Watch Ultra 2 from the side
Ultra 2 easily has a better battery than Series 9. Credit: Apple

Series 9 has a runtime of up to 18 hours on a full charge and up to 36 hours on low-power mode.

Ultra 2 is rated for literally twice that much: 36 hours by default and 72 hours on low-power mode. This is one upgrade that everyone benefits from, not just lovers of the great outdoors.

Winner: Ultra 2

Apple Watch Series 9 vs. Ultra 2: winner

As is customary with device comparisons featuring two gadgets that are so disparate in price, the more expensive one looks better on paper. Apple Watch Ultra 2 is bigger, more durable, longer-lasting, and has more features than Series 9. It's also not for everyone.

Ultra 2 is definitely made with outdoorsy adventuring types in mind. It's for people who might feasibly get lost in the woods or need to measure depth while diving in the ocean. I am certainly not one of those people and I'd venture to guess you might not be either. If that's the case, there's nothing wrong with Apple Watch Series 9; it's cheaper and has almost all of the same software features as Ultra 2.

But still, this is a competition and someone has to win. Congratulations, Apple.

Winner: Apple Watch Ultra 2 (but Series 9 is fine for most people, too)

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journalist alex perry looking at a smartphone
Alex Perry
Tech Reporter

Alex Perry is a tech reporter at Mashable who primarily covers video games and consumer tech. Alex has spent most of the last decade reviewing games, smartphones, headphones, and laptops, and he doesn’t plan on stopping anytime soon. He is also a Pisces, a cat lover, and a Kansas City sports fan. Alex can be found on Bluesky at yelix.bsky.social.

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