Apple made some pretty big announcements during its fall iPhone event on Wednesday, from the iPhone XS and iPhone XR to the Apple Watch Series 4. However, in all the excitement, some other announcements and new features may have slipped past you. Here's everything from this year's event that you may have missed.

ECGs on the Apple Watch

Probably the coolest of the new features announced during the Apple Watch keynote, the Apple Watch Series 4 offers the ability to take an ECG (electrocardiograph) no matter where you are, allowing you to keep an even closer eye on your overall heart health. All you need to do to begin the reading is open the app (which, by the way, features a beautiful pink heart made up of hypnotically floating particles) and place your finger on the watch's Digital Crown, which contains a titanium electrode. Findings are then stored in the Health app so you can take them with you the next time you meet with your doctor.

The Apple Watch Series 4 will officially be the first over-the-counter ECG reader and is approved by the FDA as a medical device in the U.S.

Apple Watch Series 4's new haptics

Speaking of the Apple Watch's Digital Crown, it's been completely redesigned and now provides satisfying, click-like haptic feedback when it's turned or pressed. As Apple's Jeff Williams mentioned, this is especially cool when you're using the Crown to scroll through a list of something, as you do in the Apple Watch's Podcasts app.

(In addition, the LTE indicator on the side of the Crown is now an understated ring instead of a big red dot).

ARKit 2.0's Multiplayer AR

During an action-packed demonstration of the new Galaga AR by Directive Games, Apple showed off ARKit 2.0's incredible ability to support multiple users on separate phones, allowing them to compete in and watch the same game at the same time. ARKit 2.0 will also include better surface and object detection, according to the company.

The new depth of field adjustment slider

Apple takes iPhoneography seriously and consistently proves that fact each time there's an iPhone-related keynote. To go with this year's nigh unbelievable iPhone camera improvements, the company brought us a new editing process that allows you to adjust the depth of field in a photo after you've taken it by swiping your finger across a slider. This will allow you to bring what you want into focus, as well as give your images a beautiful bokeh effect.

iPhone XR's redesigned single-lens system

Another testament to Apple's love of photography, the iPhone XR's redesigned single-lens system allows you to capture the depth of field and use Portrait Mode, just as you would with the dual lens systems of the XS and XS Max. The only difference is that the XR creates the effect using software rather than hardware.

Better sound all around

If you were paying close attention, you may have heard that many of the devices announced in today's keynote boast greatly-improved speakers and microphones. The Series 4 Apple Watch, for instance, was redesigned so that the speaker and microphone are on opposite sides of the watch body, making your outgoing phone calls less echoey and easier to hear. What's more, the speakers have been improved so that any sound coming from the watch — whether it's Siri, music, or a call — 50 percent louder. Similarly, the iPhone XS and XS Max also have a different speaker placement than any other iPhone, allowing for a "wider stereo sound" that's perfect for watching movies and videos.

What was your favorite part of the event? Any features you're most interested in checking out? Sound off in the comments below.

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