Apple Watch Series 9 vs. Series 10 Buyer's Guide: 18 Upgrades Compared

The Apple Watch Series 10 is now available for pre-order. The latest models feature 18 upgrades over their predecessors, so here's everything that's changed.

Apple Watch Series 9 vs Series 10 Buyers Guide 2 Mock
Apple's latest Apple Watch models bring range of small improvements along with the first design refresh in three years. Some of the most significant hardware changes include new display technologies, water temperature and depth sensing, and a reengineered metal back that allows for faster charging.

But beyond these headline features, how much of an improvement does the ‌Apple Watch Series 10‌ really offer? This guide breaks down the differences between the Series 9 and ‌Series 10 models to help you understand all of the changes and determine whether these enhancements are enough to justify making the switch from a Series 9‌.

Apple Watch Series 9 Apple Watch Series 10
Same design as Apple Watch Series 7 and Apple Watch Series 8 Refined design with a thinner casing, display with more rounded edges and a wider aspect ratio, and front glass that extends further over the sides for a higher screen-to-body ratio
41mm and 45mm casing size options 42mm and 46mm casing size options
Available with aluminum or stainless steel casing Available with aluminum or titanium casing
Aluminum: Available in anodized Silver, Starlight, Midnight, Pink, and (PRODUCT)RED finishes
Stainless Steel: Available in polished Silver, Gold, and Graphite finishes
Aluminum: Available in anodized Silver and Rose Gold, and polished Jet Black finishes
Titanium: Available in polished Silver (matches previous stainless steel casing, Apple Watch Hermès only), Gold, Slate, and Natural finishes
Ceramic and sapphire crystal back Metal back with larger charging coil and integrated antenna
41mm: 1.69-inch display
45mm: 1.9-inch display
42mm: 1.89-inch display
46mm: 2.04-inch display
LTPO OLED Always-On Retina display LTPO3 OLED Always-On Retina display (faster refresh rate in always-on mode, enabling a live ticking seconds hand on select watch faces)
Wide-angle OLED (up to 40% brighter when viewed at an angle)
Flux and Reflections watch faces, optimized for the larger display and faster refresh rate
S9 chip More compact S10 chip
Body temperature sensor Body and water temperature sensor
Depth gauge to 6m
Depth app
Oceanic+ app for snorkelling (available on the App Store)
Microphone Microphone with voice isolation
Single, elongated speaker hole Redesigned speaker with individual holes
Speaker Speaker with media playback
Fast charging (0–80% in 45 minutes) Faster charging (0–80% in about 30 minutes)

Dimensions

The Series 10 introduces slight increases in height and width, resulting in a marginally larger screen-to-body ratio. However, the depth is significantly reduced by over 9%, making the Series 10 noticeably thinner. Despite the larger case sizes, the Series 10 is lighter across both aluminium GPS and GPS + Cellular models.

Apple Watch Series 9 Apple Watch Series 10
Height 41mm: 41mm
45mm: 45mm
42mm: 42mm (+2.44%)
46mm: 46mm (+2.22%)
Width 41mm: 35mm
45mm: 38mm
42mm: 36mm (+2.86%)
46mm: 39mm (+2.63%)
Depth 41mm: 10.7mm
45mm: 10.7mm
42mm: 9.7mm (-9.35%)
46mm: 9.7mm (-9.35%)
Weight (aluminium, GPS) 41mm: 31.9g
45mm: 38.7g
42mm: 30g (-5.96%)
46mm: 36.4g (-5.95%)
Weight (aluminium, GPS + Cellular) 41mm: 32.1g
45mm: 39.0g
42mm: 29.3g (-8.72%)
46mm: 35.3g (-9.49%)

Release Date

The Apple Watch Series 10 is now available for pre-order, with availability beginning Friday, September 20.

Is It Worth Upgrading?

The Apple Watch Series 10 brings several enhancements over the Series 9, but for most users, the differences are incremental. The thinner and lighter design is an improvement, but it doesn't fundamentally alter the device's overall appearance or experience. The slightly larger display and wide-angle OLED, while improving readability, isn't a drastic change.

The improved speaker and microphone on the Series 10 are also worth noting as minor upgrades. The new speaker can playback media for the first time and the microphone now features voice isolation, improving call clarity in noisy environments.

One of the more significant changes is the faster charging. The Series 10 charges to 80% in around 30 minutes, compared to 45 minutes for the Series 9, which could be a noteworthy improvement for users who frequently need quick charges. Additionally, the Series 10 introduces new finishes, including a polished Jet Black aluminum and polished titanium options, offering a more premium aesthetic.

While the Series 10 does bring some useful upgrades, like water depth and temperature sensing, faster charging and improved audio quality, most of these enhancements feel like refinements rather than essential upgrades. Unless you're particularly drawn to the refreshed design and display improvements, the faster charging, new water features, or the speaker and microphone improvements, it's hard to justify upgrading from the Series 9. For most users, the differences won't significantly impact their daily use, making the Series 10 an upgrade only for those with very specific needs or preferences.

Those with a much older Apple Watch will have much better reason to upgrade, with the improvements of successive Apple Watch generations, such as body temperature sensing and the Double Tap gesture, stacking up for a more substantial overall difference.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

Apple Releases iOS 26.2 With Alarms for Reminders, Lock Screen Changes, Enhanced Safety Alerts and More

Friday December 12, 2025 10:10 am PST by
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. ‌iOS 26‌.2 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
macOS Tahoe 26 Thumb

Apple Releases macOS Tahoe 26.2 With Edge Light

Friday December 12, 2025 10:08 am PST by
Apple today released macOS Tahoe 26.2, the second major update to the macOS Tahoe operating system that came out in September. macOS Tahoe 26.2 comes five weeks after Apple released macOS Tahoe 26.1. Mac users can download the macOS Tahoe update by using the Software Update section of System Settings. macOS Tahoe 26.2 includes Edge Light, a feature that illuminates your face with soft...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods Pro 3

Thursday December 11, 2025 11:28 am PST by
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21. There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...

Top Rated Comments

Motawa Avatar
17 months ago
Who writes this? You list the 2 new health features as features but then you go „well actually it’s not gonna happen this year“

And what „fresh design“ there is no design refresh, it’s just bigger
Score: 25 Votes (Like | Disagree)
johannnn Avatar
17 months ago
Wait I thought the rumors was it would be thinner? But now it will go from 10.7mm depth to 11.6mm depth?
Score: 22 Votes (Like | Disagree)
Javah Avatar
17 months ago
I don't understand why Apple is making the watch larger. The 46mm model is too big for most female wrists. My wife will be upgrading to an apple watch 9 41mm or an SE of there is a 41mm because the 46mm model is just to big.

I am curious about the sales numbers when they are released.
Score: 21 Votes (Like | Disagree)
Victor Mortimer Avatar
17 months ago
Seriously? 46 and 49?

Ugh. And my 45mm 7 is too big, I was considering upgrading to a 41mm.
Score: 18 Votes (Like | Disagree)
surfzen21 Avatar
17 months ago

Wait I thought the rumors was it would be thinner? But now it will go from 10.7mm depth to 11.6mm depth?
I think when they say depth they actually mean width and when they say width they actually mean length ?‍?
Score: 13 Votes (Like | Disagree)
Roberto1234 Avatar
17 months ago
Wow, i am speechless. One of the worst Apple watch updates ever. I am still on my AW 4 and will be for a long time. I think Apple stopped innovation since Covid. Most of their workers are chilling in home office.
Score: 10 Votes (Like | Disagree)