If you want to know which Apple Watch you have, perhaps because you want to know whether a particular feature is available, because you want to update software on it, or even because you are thinking of selling it, finding out the generation is actually pretty easy.

Check the back of your Watch

The easiest way to check which generation Apple Watch you have is to look on the back.

Turn your Watch over and you will see various words around the sensors including the size, the type of glass, the material the case is made from, and the series.

Apple Watch back

Nearly all series of Apple Watch include which series the watch is on the back except the 1st generation (image below).

Back of Apple Watch

On the back of some Apple Watches you will see the words 7000 series instead. If you are thinking the 7000 series of Apple Watch is some kind of Apple Watch of the future you’ll be disappointed, the 7000 series actually refers to the grade of aluminium. This aluminium was used for the 1st generation, series 1 and series 2 Apple Watches. If you see 7000 series it's likely that your watch is a 1st generation Apple Watch.

Find your Apple Watch model number

Another way to check which generation of Apple Watch you have is to look for its model number. You can find the model number if you look in the Apple Watch app on your iPhone. Here’s how:

Note: You will need to have paired the Watch with the app on your iPhone for this method to work.

  1. Open the Watch app on your iPhone.
  2. Scroll down to General and tap on it.
  3. Tap on About.
  4. Look for the Model field - beside that you will find a code, probably starting with MQ. Tap on that to reveal the model number which will start with an A. In our case A1889.

Apple Watch model number

You will also find the serial number of your Watch here.

If you don’t have the watch paired with your iPhone, or you don’t have the iPhone handy, you can still find out which Apple Watch you have if you look on the back of your Watch (as above).

Apple Watch model numbers (GPS only):

  • A2092 - Apple Watch Series 5, 40mm, GPS
  • A2093 - Apple Watch Series 5, 44mm, GPS
  • A1977 - Apple Watch Series 4, 40mm, GPS
  • A1978 - Apple Watch Series 4, 44mm, GPS
  • A1858 - Apple Watch Series 3, 38mm, GPS
  • A1859 - Apple Watch Series 3, 42mm, GPS
  • A1757 - Apple Watch Series 2, 38mm, GPS
  • A1758 - Apple Watch Series 2, 42mm, GPS
  • A1816 - Apple Watch Edition, 38mm, GPS
  • A1817 - Apple Watch Edition, 42mm, GPS
  • A1802 - Apple Watch Series 1, 38mm, GPS
  • A1803 - Apple Watch Series 1, 42mm, GPS
  • A1553 - Apple Watch (1st generation), 38mm, GPS
  • A1554 - Apple Watch (1st generation), 42mm, GPS

Apple Watch model numbers (cellular):

If you have a cellular Apple Watch there will be a red dot or a red circle on the Digital Crown. Because the cellular standards are different depending on the country you reside in, there are more model numbers.

  • A2094 - Apple Watch Series 5, 40mm, GPS & Cellular, North America
  • A2095 - Apple Watch Series 5, 44mm, GPS & Cellular, North America
  • A2156 - Apple Watch Series 5, 40mm, GPS & Cellular, Europe and Asia
  • A2157 - Apple Watch Series 5, 44mm, GPS & Cellular, Europe and Asia
  • A1975 - Apple Watch Series 4, 40mm, GPS & Cellular, North America
  • A1976 - Apple Watch Series 4, 44mm, GPS & Cellular, North America
  • A2007 - Apple Watch Series 4, 40mm, GPS & Cellular, Europe and Asia
  • A2008 - Apple Watch Series 4, 44mm, GPS & Cellular, Europe and Asia
  • A1860 - Apple Watch Series 3, 38mm, GPS & Cellular, North America
  • A1861 - Apple Watch Series 3, 42mm, GPS & Cellular, North America
  • A1889 - Apple Watch Series 3, 38mm, GPS & Cellular, Europe and Asia
  • A1891 - Apple Watch 3, 42mm, GPS & Cellular, Europe and Asia

How big is my Apple Watch?

Another factor in discovering which Apple Watch you have is its size. This is useful information if you are selling, but it can also help you narrow down the options in terms of which generation it is because Series 3 and Series 4 Watches are slightly larger than their predecessors.

For every generation Apple has always made two different sizes of Apple Watch. Back when the first Apple Watch launched you had the choice of a 38mm or 42mm watch face. The smaller version being better suited to smaller wrists.

With the arrival of the Series 4 Apple increased the screen size, although it didn’t make the watch itself much bigger (it reduced the bezels around the display).

Apple Watch size

You probably won’t want to get a ruler out and attempt to measure the screen, but if you do you need to measure diagonally.

An easier way to find out the size of the screen would be to look on the back of the Watch. Here you will see the size: in our case 38mm.

Speaking of the screen, a simple way to get a rough idea of which generation of Watch you have would be to look at the face while you have a photo open. If there is a noticeable border around the edge of the photo, and the photo has edges, you probably have a Series 3 Watch or older. If the border around the image is curved then you have a Series 4 or 5.

How old is my Apple Watch?

Having determined which Apple Watch model you have you may be wondering when it went on sale. Alternatively you may have been given an Apple Watch for Christmas or a birthday and in that case could have a rough idea of how old it is, in which case you could use that information to work out which model it is.

  • April 2015 - 1st generation Apple Watch (aka Series 0) - discontinued 2016 
  • September 2016 - Apple Watch Series 1 - discontinued 2017
  • September 2016 - Apple Watch Series 2 - discontinued 2017
  • September 2017 - Apple Watch Series 3 - still on sale
  • September 2018 - Apple Watch Series 4 - discontinued 2019
  • September 2019 - Apple Watch Series 5 - still on sale

Note that older generations of Apple Watch continued to be sold even after Apple introduced the next generation. So if you bought a Watch from Apple in 2019 it could have been a Series 5 or Series 3.

Which features does my Apple Watch have?

Finally, if having found out which generation of Apple Watch you have you are wondering what features it has read on…

Apple Watch 1st generation features

  • 42mm or 38mm case
  • S1 chip
  • No GPS
  • Bluetooth 4
  • Heart rate sensor
  • 8GB storage (for 2GB music and 75MB photos)

Apple Watch Series 1 features

  • 42mm or 38mm case
  • S2 chip (known as S1P)
  • No GPS
  • Bluetooth 4
  • Heart rate sensor
  • 8GB storage (for 2GB music and 75MB photos)

Apple Watch Series 2 features

  • 42mm or 38mm case
  • S2 chip
  • GPS
  • Bluetooth 4
  • Heart rate sensor
  • 8GB storage (for 2GB music and 75MB photos)
  • Water resistance to 50 meters

Apple Watch Series 3 features

  • 42mm or 38mm case
  • 11.4mm thin
  • Dual core S3 chip
  • GPS
  • Bluetooth 4.2
  • LTE cellular option
  • Heart rate sensor
  • Altimeter for measuring stairs climbed
  • More RAM than previous generation
  • Siri can speak
  • 8GB storage (for 2GB music and 75MB photos)
  • Water resistance to 50 meters

Apple Watch Series 4 features

  • 44mm or 40mm case
  • 10.7mm thin
  • Dual core S4 chip
  • GPS
  • Bluetooth 4.2
  • LTE cellular option
  • W3 wireless chip
  • Heart rate sensor (2nd generation)
  • ECG system
  • Detects falls
  • Altimeter for measuring stairs climbed
  • Siri can speak
  • Digital Crown has Haptic feedback
  • 16GB storage
  • Water resistance to 50 meters

Apple Watch Series 5 features

  • 44mm or 40mm case
  • 10.7mm thin
  • Dual core S5 chip
  • GPS
  • Bluetooth 5
  • LTE cellular option
  • W3 wireless chip
  • Heart rate sensor (2nd generation)
  • ECG system
  • Detects falls
  • Altimeter for measuring stairs climbed
  • Magnetometer for compass
  • Siri can speak
  • Louder speaker
  • Digital Crown has Haptic feedback
  • Always on display
  • Improved ambient light sensor
  • 32GB storage
  • Water resistance to 50 meters

Is my Apple Watch waterproof?

Apple introduced water resistance to 50 meters with the Series 2 Apple Watch. Prior to that the Apple Watch was just “splash resistant”.

Note that water resistant is not the same as waterproof. It doesn’t mean that you can take an Apple Watch scuba diving. But you should be ok in the shower (as long as you don’t shampoo it) or paddling in the sea.

Once your Watch has got wet you should clean it with fresh water and wipe it dry.

Apple notes that your Watch will become less water resistant over time, especially if you keep getting it wet.

We have more information about which Apple Watches are waterproof here.

Has my Apple Watch got cellular?

If you have an Apple Watch Series 3 or later it’s possible you have Cellular (the ability to make calls, receive texts, etc, without having your iPhone with you). You would need a contract with a mobile network to use those features though.

If your Apple Watch has the ability to have a cellular connection there will either be a big red dot on the Digital Crown, or a red ring on the Digital Crown.

Cellular Watch

The Cellular version costs £100/$100 more than the standard version and you also have to factor in the cost of a mobile contract.