Apple Watch Series 4 Hands-On: Larger Displays, New Finishes, Slightly Thinner, ECG, and More

Following the introduction of Apple Watch Series 4 models at Steve Jobs Theater today, MacRumors and other media outlets were provided with some up-and-close hands-on time with the new lineup.

series 4 8
At first glance, the most obvious difference with Series 4 models is their larger displays, as Apple has significantly reduced the size of the bezels around the screen. The bezels now look similar to those on the iPhone X and newer, although the display is not completely edge to edge.

Apple says the larger displays provide 32 percent and 35 percent more viewing area on the new 40mm and 44mm models respectively, compared to the previous 38mm and 42mm models in previous generations.

series 4 2
Taking advantage of the larger displays, Apple has redesigned the entire watchOS interface to provide more information with richer detail. A new Infograph watch face can accommodate up to eight complications.

Series 4 models are also ever slightly thinner than Series 3 models, measuring in at 10.7mm, compared to 11.4mm. Apple didn't allow me to test my Series 3 band with a Series 4 model, but it did confirm that both new and existing bands are compatible with all Apple Watch generations.

series 4 4
Apple Watch Series 4 has a new electrical heart sensor on the back side for electrocardiography, often shortened to ECG or EKG. This potentially life-saving functionality can indicate whether your heart rhythm shows signs of atrial fibrillation, a serious form of irregular heart rhythm.

Series 4 introduces some finishes, including gold stainless steel casing and a gold Milanese Loop. The back side on all the new models is now crafted from sapphire crystal and ceramic, whereas some Series 3 models had composite backs.

series 4 3
On the side of Series 4 models, the Digital Crown features a thin circle, which is black on GPS configurations and red on LTE configurations. By comparison, nearly the entire Digital Crown is red on Series 3 models with LTE. In my opinion, the new, subdued look of the crown is more aesthetically pleasing.

series 4 5
series 4 7series 4 1
series 4 6
Overall, the Series 4 models do not represent a full-out redesign of the Apple Watch, but the larger displays and improved health monitoring tools are much welcomed features that are worth considering upgrading for.

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

Popular Stories

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Monday December 1, 2025 2:40 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
Johny Srouji

Apple's Chipmaking Chief Johny Srouji Responds to Report About Him Potentially Leaving

Monday December 8, 2025 9:23 am PST by
Apple's chipmaking chief Johny Srouji has reportedly indicated that he plans to continue working for the company for the foreseeable future. "I love my team, and I love my job at Apple, and I don't plan on leaving anytime soon," said Srouji, in a memo obtained by Bloomberg's Mark Gurman. Here is Srouji's full memo, as shared by Bloomberg:I know you've been reading all kind of rumors and...
Johny Srouji

Apple Chip Chief Johny Srouji Could Be Next to Go as Exodus Continues

Sunday December 7, 2025 10:41 am PST by
Apple's senior vice president of hardware technologies Johny Srouji could be the next leading executive to leave the company amid an alarming exodus of leading employees, Bloomberg's Mark Gurman reports. Srouji apparently recently told CEO Tim Cook that he is "seriously considering leaving" in the near future. He intends to join another company if he departs. Srouji leads Apple's chip design ...
google pixel 10

Switching Between iPhone and Android Will Get Easier With New Apple and Google Collaboration

Monday December 8, 2025 11:10 am PST by
Apple and Google are teaming up to make it easier for users to switch between iPhone and Android smartphones, according to 9to5Google. There is a new Android Canary build available today that simplifies data transfer between two smartphones, and Apple is going to implement the functionality in an upcoming iOS 26 beta. Apple already has a Move to iOS app for transferring data from an Android...
top stories 2025 12 04a

Top Stories: iOS 26.2 Coming Soon, Apple Execs Depart, and More

Saturday December 6, 2025 6:00 am PST by
You'd expect things to be starting to wind down for the holidays by now, but that doesn't seem to be the case yet in the world of Apple news, with Apple just about ready to release iOS 26.2 and other operating system updates to the public. There was also a flurry of news this week about Apple executive departures, some expected and some not so expected, while we also learned that Apple and...
Apple Fitness Plus expansion hero

Apple Fitness+ Coming to 28 New Regions With Digital Voice Dubbing

Monday December 8, 2025 6:19 am PST by
Apple today announced that Fitness+ is expanding to 28 new markets on December 15 in the service's largest international rollout since launch, accompanied by new language dubbing and a K-Pop music genre. Apple Fitness+ will become available in Chile, Hong Kong, India, the Netherlands, Singapore, Taiwan, and additional regions on December 15, with Japan scheduled to follow early next year....

Top Rated Comments

dtich Avatar
95 months ago
Huge Apple product user here... Apple Watch was my main hope for this keynote, and while it looks good, they still lack in a few areas FitBit has them smoked in:

1. Sleep tracking
2. Battery Life

I am really on the fence here. I love the products, hate the price, and feel like some basic features are missing when FitBit can deliver this stuff on a $150 device.
go make a phone call on your fitbit. then scroll thru some pix. watch a vid maybe. answer a text. get directions to a concert. oh wait.....

they are NOT the same device. you want a fitbit buy a f-ing fitbit. stop making annoying comparisons...
Score: 16 Votes (Like | Disagree)
SteveJobs2.0 Avatar
95 months ago
Apple Watch 4 saved this event.
Score: 13 Votes (Like | Disagree)
e-coli Avatar
95 months ago
I wish the stock Apple Watch faces didn't look like ridiculous toys. I had to buy an Hermès edition to get an attractive face. What's more, if I wanted the Nike watch faces, I'd have to buy a whole separate Apple Watch. It'd be great if Apple just opened a Watch Face section of the App Store. They'd sell like crazy.
Score: 10 Votes (Like | Disagree)
Lucamegh Avatar
95 months ago
2 hours event and that's the only product I'm (mildly) interested in. Thanks Tim!
Score: 7 Votes (Like | Disagree)
HiRez Avatar
95 months ago
Bigger screen is nice but that still looks like a real fat bezel to me. They may be "similar to the new iPhones" in terms of the actual width of the bezel, but as a percentage of screen size, they're much larger. It's a shame they couldn't bring it out closer to the edge and either make the screen even bigger, or make the case smaller.

I could also do with a slightly less bulbous curvature on the edges of the screen, make it a little flatter with a slightly sharper rounding, it kind of feels like I'm looking into one of those snow globes or something.
Score: 6 Votes (Like | Disagree)
Ankaa Avatar
95 months ago
Bummer, it's really not THAT much thinner. It appeared really thin on the pictures that leaked/during the presentation, but I'm not quite sure what difference 0.7mm make in reality, particularly on the smaller model. Add the additional 2mm in size and it might look even bulkier on small wrists (such as women's) than the previous series. Absolutely not thrilled about the larger size, my series 2 looks bulky on my wrist as is. Again, bummer, because I LOVE the new display and functionality.
Score: 4 Votes (Like | Disagree)