Apple Unveils Apple Watch Series 4 With 30 Percent Larger Display, Thinner Body, ECG Reader, Fall Detection, and More

Apple announced new Apple Watch models at its Gather Round event today at the Steve Jobs Theater in Apple Park, Cupertino. The Apple Watch Series 4 will be available in 40mm and 44mm sizes – a step up from the 38mm and 42mm options of previous models – has a thinner body, and comes with a number of next-generation medical heart detection features approved by the FDA.

apple watch series 4
The new models have screens that are 30 percent larger than previous versions and, combined with a new user interface, allow watch faces to display up to eight complications, while native apps can show more information.

The Digital Crown has been re-engineered to include haptic feedback for better tactile responsiveness, the built-in speaker is 50 percent louder, and the microphone has been relocated, to reduce echo for better sound quality.

Meanwhile, new heart detection features, made possible via a new electrical heart sensor, include the ability to perform electrocardiogram (ECG) readings right out of the box, as well as detect low heart rhythm with background detection for atrial fibrillation, and low heart rate monitoring to detect very low blood flow from the heart.

The back of the Series 4 is made entirely of ceramic and sapphire crystal, with radio waves able to pass more freely through the front and rear, enabling better reception when using cellular functions. Despite the new tech, battery life remains on average the same as the previous generation Apple Watch, while running enthusiasts can now look forward to six hours' battery life when using outdoor workouts.

apple watch series4 gold stainless steel 09122018
A new 64-bit Dual Core S4 processor provides up to 2x faster performance over previous generation models, and faster accelerometer and gyroscope technologies allow for better sensitivity, including the ability to detect a physical fall.

By analyzing wrist trajectory and impact acceleration, the Apple Watch Series 4 sends the user an alert after a fall, which can be dismissed or used to initiate a call to emergency services. If the device senses immobility for 60 seconds after the notification, it will automatically call emergency services and send a message along with location to emergency contacts.

With watchOS 5, Activity competitions allow users to challenge other Apple Watch wearers, automatic workout detection provides an alert to start a workout while giving retroactive credit, and Yoga and Hiking are new dedicated workout types that accurately track active calories burned and exercise minutes earned.

Meanwhile, Apple Watch owners can reach their friends with a tap of the wrist with Walkie-Talkie, a watch-to-watch connection exclusive to watchOS 5 that allows communication around the world over Wi-Fi or cellular.

The 40mm and 44mm Apple Watch models come in GPS and GPS + Cellular versions, in Silver, Space Gray, and Gold aluminum case options, and stainless steel options in Silver, Space Black, and Gold (with matching Milanese band).

apple watch series4 ecg crown 09122018
A new Nike+ collection for Series 4 features redesigned Nike watch faces, which match to the new band colors, including a Pure Platinum/Black Sport Band and a Summit White Sport Loop with reflective yarn. Meanwhile new Hermès variants introduce an assortment of color-blocked bands and watch faces that shift from one color to the other with the passage of the minute hand.

Apple Watch Series 4 pricing starts at $399 for GPS and $499 for LTE, while the Series 3 continues to be available but at the new lower price of $280. Orders for the new models and new bands open Friday, September 14, with availability beginning Friday, September 21, in Australia, Canada, China, Denmark, France, Germany, Hong Kong, Italy, Japan, Singapore, Spain, Sweden, Switzerland, the UAE, UK and US, with other countries later this year.

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

Popular Stories

iOS 26

Everything New in iOS 26.1 Beta 1

Monday September 22, 2025 12:44 pm PDT by
Apple released the first beta of iOS 26.1 today, just a week after launching iOS 26. iOS 26.1 mainly adds new languages to Apple Intelligence, but there are a few other features that are worth knowing about. New Apple Intelligence Languages Apple Intelligence is now available in Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. AirPo...
apple tv 4k new orange

Next Apple TV Expected to Launch This Year With These New Features

Monday September 22, 2025 10:00 am PDT by
The next Apple TV is expected to be released later this year, and a handful of new features and changes have been rumored for the device. Below, we recap what to expect from the next Apple TV, according to rumors. Likely Features N1 Chip With Wi-Fi 7 Last year, Bloomberg's Mark Gurman said the next Apple TV would be equipped with Apple's own combined Wi-Fi and Bluetooth chip, which is...
Apple Intelligence General Feature 2

iOS 26.1 Adds New Apple Intelligence Languages and Expands AirPods Live Translation

Monday September 22, 2025 11:15 am PDT by
With iOS 26.1, Apple Intelligence is gaining support for additional languages, including Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. Apple announced plans to expand the languages that can be used with Apple Intelligence last year, and now the added language support is here. Apple Intelligence is now available in the following...
iPhone 17 Pro USB C Port

iPhone 17 Pro Max's USB-C Charging Speeds Tested With Apple Chargers

Monday September 22, 2025 7:29 am PDT by
The website ChargerLAB has tested the iPhone 17 Pro Max's USB-C charging speeds with a variety of Apple's chargers, from 18W to 140W. The device reached a peak charging speed of around 36W with the following Apple chargers:40W Dynamic Power Adapter with 60W Max 61W USB-C Power Adapter 67W USB-C Power Adapter 70W USB-C Power Adapter 96W USB-C Power Adapter 140W USB-C Power AdapterFor...
iPhone 17 Pro and Air N1 Feature

Some iPhone 17, iPhone 17 Pro, and iPhone Air Users Experiencing Intermittent Wi-Fi Issue

Monday September 22, 2025 8:44 am PDT by
Apple's latest iPhone models launched on Friday, and some early adopters of the devices are experiencing intermittent Wi-Fi issues. Affected customers say Wi-Fi connectivity periodically cuts out on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air, with hundreds of comments about the issue posted across the MacRumors Forums, Reddit, and the Apple Support Community over the...
Apple Foldable Thumb

Foldable iPhone Like 'Two Titanium iPhone Airs' Joined at the Hinge

Monday September 22, 2025 2:16 am PDT by
Next year's rumored foldable iPhone will showcase an ultra-thin design resembling "two titanium iPhone Airs side-by-side," according to Bloomberg's Mark Gurman. Writing in the Q&A section of his latest Power On newsletter, Gurman says Apple's first foldable device will be "super thin and a design achievement," combining Apple's thinnest iPhone form factor with cutting-edge folding...
iPhone 17 Pro Colors

Skipped the iPhone 17 Pro? Here's What is Rumored for iPhone 18 Pro

Tuesday September 23, 2025 8:55 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are still a year away, there are already a few rumors about the devices that offer an early look ahead. Below, we have recapped some of the early iPhone 18 Pro rumors so far. This story was published previously, and it has been updated to reflect the latest rumors. Many early rumors prove to be true, but nothing is confirmed yet, and Apple's...
iphone 17 pro dark blue 1

Apple Blames In-Store MagSafe Chargers for iPhone 17 Pro Display Model Scratches

Wednesday September 24, 2025 10:22 am PDT by
The marks on the iPhone 17 Pro models that people have noticed at Apple retail stores are caused by the chargers that Apple uses, Apple confirmed today. Apple told 9to5Mac that worn MagSafe charging stands in stores are causing marks on the iPhone 17 Pro and iPhone 17 Pro Max. Apple says that the marks are not scratches, and are instead material transfer from the stand to the phone. The...
ios 26 digital id passport wallet

Apple Confirms iOS 26 Wallet Passport Feature is Coming in 2025

Tuesday September 23, 2025 1:06 pm PDT by
Digital ID, the iOS 26 feature that lets U.S. passport holders add their passports to the Wallet app, is coming later in 2025, Apple confirmed today. Apple updated the release timing wording of Digital ID on its iOS 26 features page. "Digital ID will be coming later this year with US passports only," it reads. Prior to today, the footnote for the feature said "Digital ID will be available ...
maxresdefault

iPhone 17 Pro is Vulnerable to Scratching, But Not Where You Might Think

Tuesday September 23, 2025 2:18 pm PDT by
Early reports have suggested that the iPhone 17 Pro and iPhone Air are more vulnerable to scratches and scuffs, primarily due to damage spotted at Apple Stores. Apple customers have discovered that the iPhone Air and iPhone 17 Pro models Apple has out for display at its retail locations have scratching in the area of the MagSafe charger. Those devices are handled by hundreds to thousands of...

Top Rated Comments

nviz22 Avatar
92 months ago
Gotta hand it to Apple, they really are pushing some good health related functions w/ the Series 4.
Score: 34 Votes (Like | Disagree)
dojoman Avatar
92 months ago
Shut up and take my money.
Score: 22 Votes (Like | Disagree)
zakarhino Avatar
92 months ago
Was happy with my Series 2 but the ECG alone has me interested in an upgrade.
Score: 21 Votes (Like | Disagree)
nezr Avatar
92 months ago
I was hoping for better sleep tracking :(
Score: 17 Votes (Like | Disagree)
BMcCoy Avatar
92 months ago
Okay, this is good.
The watch is really evolving into a useful medical device.

ECG lead 1 isn't going to replace a full 12-lead ECG, but by golly it's a damn fine start!

I won't be buying one, but I like the direction they're going in...

(I'm a doc)
Score: 16 Votes (Like | Disagree)
BillGates1969 Avatar
92 months ago
So the fall detection does what?

Tell you later that you fell?
Tells you it is no longer summer.
Score: 13 Votes (Like | Disagree)