At the Sept. 12 press event, Apple unveiled its next-generation Apple Watch. If you think little has changed, you'd be wrong in a big way.

I heard there are new sizes

You heard correctly. Series 4 comes in 40mm and 44mm instead of previous models 38mm and 42mm. It's only a slight size increase but it makes that slim-bezel face we heard about earlier have even more real estate.

The larger case of the Apple Watch Series 4 measures 39.9mm wide for the smaller model and 45.2mm wide for the larger model. For comparison, the Series 3 Apple Watch measures 33.3mm wide and 35.9 wide.

So the display is even larger? How?

Thanks to the nearly edge-to-edge screen of the Series 4, not only is the actual face bigger, but the display is about 15% larger. That's more room for complications, web browsing, and all the awesome things that watchOS 5 brings with it. This, combined with the larger casing makes the Series 4 32-35% larger than its predecessor I bet you're thinking you need a new Apple Watch now.

If the cases are bigger, doesn't that mean the Series 4 won't fit my current Apple Watch bands?

Believe it or not, your current Apple Watch bands will fit the Series 4. Apple did us all a big favor and designed the new cases with a slight taper so the minuscule increase in physical size won't affect the band connections.

Now you're talking! So what colors does it come in?

Series 4 comes in the same colors that Series 3 does with one addition: gold stainless steel.

  • Silver aluminum
  • Space gray aluminum
  • Gold aluminum
  • Polished stainless Steel
  • Space black stainless steel
  • Gold stainless steel
  • Nike Edition silver aluminum
  • Nike Edition Space Gray aluminum

Is there still a cellular model?

There is. You can get the aluminum case Apple Watch Series 4 GPS or GPS + Cellular, but the stainless steel model is only available with GPS + Cellular.

What about a Special Edition version? Any new materials?

Not this year. Apple didn't add a ceramic or gold-plated special edition to the Series 4 lineup. Looks like those fancy expensive models just aren't making the grade.

Is it faster? Does the battery last longer?

Series 4 now has a custom 64-bit dual-core processor S4 SiP (system-in-package) with up to 2X faster performance.

It has an updated accelerometer and gyroscope that has 2x dynamic range up to 32 g-forces.

It also has the same 18-hour battery life with a full 6 hours of workout tracking.

Has the case design changed?

As a matter of fact, it has. The speaker is 50 percent louder and the microphone is now on the opposite side to reduce echo and improve sound quality.

The backside of the Series 4 is made of ceramic with sapphire crystal for better radio wave reception.

The Digital Crown now has hapitc feedback. When spinning the dial in different apps, you'll feel a physical response in the form of clicks (like how it feels to wind up one of those old timepieces called a watch).

What's this I hear about an ECG monitor?

Apple is doing more than ever to help everyday people monitor their health, hearts included. Apple Watch Series 4 has an electrocardiograph (ECG) so you can monitor your heartbeat and check for irregularities.

When you take an ECG using the ECG app, you'll place your finger on the Digital Crown. It will monitor the pulse of your heart rate.

Apple Watch has two more features to help you monitor your heart. It will send a notification if your heart rate appears to be too low. If it's too low, it might not be pumping enough blood to your body. Apple Watch Series 4 can detect it.

Series 4 also screens your heart rhythm in the background and lets you know if it reads symptoms of Atrial fibrillation.

With the app, users touch the Digital Crown and after 30 seconds, receive a heart rhythm classification. It can classify if the heart is beating in a normal pattern or whether there are signs of Atrial Fibrillation.

Recordings are stored in the Health app in a PDF that you can share with your doctor.

I heard that if I fall, Series 4 will call emergency services for me

That's correct. Apple Watch Series 4 has an updated accelerometer and gyroscope and can now support fall detection. If you slip and fall, your Apple Watch will know and will trigger SOS on your screen. If Apple Watch doesn't detect movement for one minute, it will automatically call emergency services.

Fall detection utilizes a next-generation accelerometer and gyroscope, which measures up to 32 g-forces, along with custom algorithms to identify when hard falls occur. By analyzing wrist trajectory and impact acceleration, Apple Watch sends the user an alert after a fall, which can be dismissed or used to initiate a call to emergency services. If Apple Watch senses immobility for 60 seconds after the notification, it will automatically call emergency services and send a message along with location to emergency contacts.

How much do I have to steal from my piggy bank for one of these

With all of these new features, of course, the price has to go up. You can get the Apple Watch GPS Series 4 starting at $399. The Apple Watch GPS + Cellular Series 4 starts at $499.

Series 3 starts at $279 and is available to purchase now.

When, where, how (do I get one)?

You can preorder the Apple Watch Series 4 GPS and GPS + Cellular on September 14.

The cellular model will be available in stores starting September 21 in the U.S., Australia, Canada, China, Denmark, France, Germany, Hong Kong, Italy, Japan, Singapore, Spain, Sweden, Switzerland, the UAE, and the UK. Other countries will be added later this year.

The standard GPS model will be available in stores starting September 21 in the U.S., Australia, Austria, Belgium, Canada, China, Denmark, Finland, France, Germany, Guernsey, Hong Kong, Ireland, Italy, Japan, Jersey, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Puerto Rico, Saudi Arabia, Singapore, Spain, Sweden, Switzerland, the UAE, UK, and US Virgin Islands.

The standard GPS model will also be available beginning Friday, September 28, in Bahrain, Croatia, Czech Republic, Greece, Guam, Hungary, Iceland, Kazakhstan, Kuwait, Macau, Monaco, Oman, Poland, Qatar, Romania, Russia, Slovakia and South Africa.

Any questions?

We're updating this FAQ as the news comes in, so keep it bookmarked and come back often for more information. Do you have any questions about Apple Watch Series 4 that we haven't answered yet? Put them in the comments and we'll find out for you.