Apple Watch Series 9 vs. Ultra 2 Buyer's Guide: 25 Differences Compared

At its "Wonderlust" event in 2023, alongside the Apple Watch Series 9, Apple announced the Apple Watch Ultra 2. The Apple Watch Ultra is a relatively new kind of smartwatch from Apple with a focus on withstanding extreme environments, a high level of durability, extended battery life, and additional features to aid activities like diving and exploration.

Apple Watch Series 9 vs Ultra 2 Buyers Guide
Both the Apple Watch Series 9 and the ‌Apple Watch Ultra 2‌ feature the S9 chip, a second-generation Ultra Wideband chip, an Always-On Retina display, IP6X dust resistance, and more, but there are significant differences between the two devices.

With as little as $50 between the 45mm stainless steel Apple Watch Series 9 and the Apple Watch Ultra, some prospective customers will be weighing up whether it is worth spending a little extra to get the 49mm Ultra model. While there is a $400 difference between the 41mm aluminum Apple Watch Series 9 and the Apple Watch Ultra, the high-end model offers a set of features to address specific challenges, so it may even be worth it for some of these buyers.

Apple Watch Series 9 Apple Watch Ultra (second-generation)
Aluminum casing Aerospace-grade titanium casing
Front crystal curves at edges onto shaped aluminum casing Lighter, corrosion resistant case with raised edges to protect the flat sapphire front crystal
Digital Crown with haptic feedback and side button Digital Crown with haptic feedback, side button, and customizable Action button
45mm or 41 mm case size (vertical) 49mm casing size (vertical)
10.7mm thickness 14.4mm thickness
Weighs 31.9 grams to 51.5 grams Weighs 61.4 grams
Ion-X front glass (aluminum) or sapphire crystal (stainless steel) Sapphire crystal front glass
Curved display with refractive edge Flat display
904 sq mm (41mm) or 1,143 sq mm (45mm) display area 1164 sq mm display area
352 by 430 pixels (41mm) or 396 by 484 pixels (45mm) 410 by 502 pixels
Up to 2,000 nits brightness Up to 3,000 nits brightness
Exclusive Wayfinder and Modular Ultra faces
Night Mode for low-visibility conditions
Single speaker Dual speakers
Single microphone Triple-microphone array with beamforming and wind noise mitigation
GPS (L1) Precision dual-frequency GPS (L1 and L5)
86-decibel Siren to attract attention
Water resistant to 50m Water resistant to 100m
Swimproof Swimproof and recreational dive to 40m
Tested to MIL-STD 810H
EN13319 certification
Water temperature sensor, depth gauge, and dive computer app
Up to 18-hour battery life, up to 36 hours in Low Power Mode Up to 36-hour battery life, up to 72 hours in Low Power Mode
Available in Midnight, Starlight, Silver, Pink, and PRODUCT(RED) (aluminum) or Silver, Graphite, or Gold (stainless steel) Natural titanium finish only
Starts at $399 (aluminum) and $699 (stainless steel) Priced at $799

The Apple Watch Ultra offers specific capabilities to address the requirements of those who need their Apple Watch to provide assistance in challenging environments. If you need a more durable Apple Watch with features like a brighter display, louder speakers, a more reliable GPS, better water resistance, and more, the Apple Watch Ultra is undoubtedly the best choice.

The Apple Watch Ultra is also the largest and most feature-rich Apple Watch option available, not to mention that it offers the first true redesign of the device since its introduction in 2015. For technology enthusiasts, Apple Watch Ultra represents a way to get a new Apple Watch experience with the top specifications. Features like longer battery life and a larger, brighter display are also highly accessible, and will be beneficial to all users. As such, some customers may still be inclined to choose the ‌Apple Watch Ultra 2‌ over the Apple Watch Series 9, even if they do not need it for use in challenging environments.

As the largest Apple Watch model to date, the size of the Apple Watch Ultra will not be for everyone. If you already prefer the 41mm Apple Watch casing size, the Apple Watch Ultra may be far too large for you. If in doubt, it may be worth heading to an Apple Store and trying on the Apple Watch Ultra in person to get to grips with the size and determine if it is too big and bulky for you.

Similarly, the Apple Watch Ultra's look may not appeal to some buyers. If you prefer the stainless steel Apple Watch and are looking for a more fashion-focused smartwatch that pairs well with premium bands, the more aggressive, rugged design of the Apple Watch Ultra may not be for you.

If the Apple Watch Ultra is out of your price range but you still want to use your Apple Watch in challenging environments, it is worth bearing in mind that the Series 9 still offers a durable design with a strong front crystal, water resistance, and many of the ‌Apple Watch Ultra 2‌'s software features like waypoint marking.

The ‌Apple Watch Ultra 2‌ has a lot to offer, especially for the subset of users who can take advantage of all of its capabilities, so it is certainly worth considering when purchasing a new model, but the Apple Watch Series 9 is still a compelling all-around option that comes in at a lower price point with a subtler design.

Related Forum: Apple Watch

Popular Stories

iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Beyond iPhone 13 Better Blue

20th Anniversary iPhone Likely to Be Made in China Due to 'Extraordinarily Complex' Design

Monday April 28, 2025 4:29 am PDT by
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman. In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
iPhone 17 Air Pastel Feature

iPhone 17 Air Launching Later This Year With These 16 New Features

Thursday April 24, 2025 8:24 am PDT by
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device. Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
iPhone 17 Pro on Desk Feature

All iPhone 17 Models Again Rumored to Feature 12GB of RAM

Tuesday April 29, 2025 3:36 am PDT by
All upcoming iPhone 17 models will come equipped with 12GB of RAM to support Apple Intelligence, according to the Weibo-based leaker Digital Chat Station. The claim from the Chinese leaker, who has sources within Apple's supply chain, comes a few days after industry analyst Ming-Chi Kuo said that the iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max will all be equipped with 12GB of RAM. ...

Top Rated Comments

Costino1 Avatar
21 months ago
I'm not a pro user, I'm not a diver or mountain climber; but I did get the Ultra 1 last year. Why? I like the bigger screen. I love the battery life. I love the brighter screen. I see the "original" Apple Watches now and I can never go back. It's like going from a Ford to a Tesla back to a Ford. I highly recommend spending the extra $$$ on the Ultra if you wear your Apple Watch daily.
Score: 6 Votes (Like | Disagree)
iRun26.2 Avatar
21 months ago
It’s just too big for me. Especially thickness. I think the standard size is already as thick as I could stand. I’m glad people with bigger wrists have the option of the Ultra, but for me it’s just to large.
Score: 6 Votes (Like | Disagree)
ELman Avatar
21 months ago
I wanted an ultra but the black/space gray never appeared. Hopefully next year. A little thinner would also be nice. I ended up going with the series 9
Score: 5 Votes (Like | Disagree)
BeforeTheMeds Avatar
21 months ago
I was never really interested in apple watch before, but am now for medical reasons. This may just replace my current “fall” button and the ekg and oxygen level a bonus.
Score: 4 Votes (Like | Disagree)
mattyeahoo Avatar
21 months ago
I have never come so close to buying something then deciding not to. I have a series 6 in blue and I’m going to wait another year for the series X. As much as I want it, the ultra is just too big for my 165mm wrist and I have no need for cellular(my carrier doesn’t even offer it). There’s not much in terms of upgrades that I’d use that either the 9 or Ultra offer over my 6 so I’m going to wait. It wasn’t easy and I truly hope next year will be an exciting year for the watch.
Score: 3 Votes (Like | Disagree)
svish Avatar
21 months ago
Both Series 9 and Ultra 2 are good models. Waiting to see what Apple has in store for the 10th anniversary of the watch
Score: 3 Votes (Like | Disagree)