Which Apple Watch model do you actually have?
Your Apple Watch has been on your wrist for months. You check notifications, steps, and heart rate daily. But which model is it? Series 4? 5? SE? That question only arises when you want to replace a strap or pair your AirPods . Or when you're at the checkout with new accessories and the salesperson asks, "Which Apple Watch do you have?" A blank stare.
The funny thing is, Apple deliberately hid this information. Not out of convenience, but out of design philosophy. Jobs wanted you to forget about technology and just use it. But now that you want to sell a used watch, or that new watchOS update isn't working, you desperately need that model information. In three simple steps, you'll soon find out exactly which Watch you're wearing. No hassle, no technical knowledge required.
Useful links
Three methods to determine your model
Method 1: Through the Watch app on your iPhone
The fastest way to find out which watch you're wearing is through your paired iPhone. Open the Watch app (the black icon with the white watch) and follow these steps:
- Tap 'My Watch' at the bottom
- Select 'General' from the menu
- Select 'Info'
- Here you can see the model number directly
The model number always begins with an 'A' followed by four digits. For example: A2291 is a Series 6 with a 40mm case. This number not only tells you the series, but also the case size and whether it's a GPS or GPS + Cellular version.
Method 2: Directly on the watch
Don't have an iPhone handy? No problem. You can also find the information directly on the device itself:
- Press the Digital Crown to go to the main screen
- Tap 'Settings' (the gear icon)
- Scroll to 'General'
- Select 'Info'
- Scroll down until you see 'Model'
This shows the same model number as in the Watch app. Handy when you're in a store, for example, and need to quickly check if that new strap fits.
Method 3: Physical inspection of the back
The most direct method works without a battery or connection:
- Loosen the strap and remove the watch from your wrist
- Turn it around
- Look at the bottom of the back
- The model number is engraved there in small letters
This method even works with a completely dead battery. Perfect when buying or selling a used one.
Translate model numbers to series
Once you've found your model number, you need to know what it means. Here's an overview of the most common numbers:
Series 3 (2017)
- A1858, A1859: 38mm GPS
- A1860, A1861: 42mm GPS
- A1889, A1890: 38mm GPS + Cellular
- A1891, A1892: 42mm GPS + Cellular
Series 4 (2018)
- A1977: 40mm GPS
- A1978: 44mm GPS
- A2007: 40mm GPS + Cellular
- A2008: 44mm GPS + Cellular
Series 5 (2019)
- A2092: 40mm GPS
- A2093: 44mm GPS
- A2094: 40mm GPS + Cellular
- A2095: 44mm GPS + Cellular
Series 6 (2020)
- A2291: 40mm GPS
- A2292: 44mm GPS
- A2293: 40mm GPS + Cellular
- A2294: 44mm GPS + Cellular
Series 7 (2021)
- A2473: 41mm GPS
- A2474: 45mm GPS
- A2475: 41mm GPS + Cellular
- A2476: 45mm GPS + Cellular
Series 8 (2022)
- A2770: 41mm GPS
- A2771: 45mm GPS
- A2772: 41mm GPS + Cellular
- A2773: 45mm GPS + Cellular
Why is model identification important?
Knowing your exact model helps in several situations:
When purchasing accessories
Straps vary by case size. A 38mm strap won't fit a 44mm case. Cases and screen protectors are also model-specific. Using the correct model number will help you avoid making the wrong purchase.
For software updates
Not all models support the latest watchOS versions. For example, the Series 3 crashes at watchOS 8.8, while newer models progress to watchOS 10 and beyond. Before updating, check if your device can handle the update.
In case of sale or exchange
The value of your watch depends heavily on the specific model. A Series 6 with cellular will fetch more than a GPS-only version. The case size also influences the price. With accurate model information, you'll get a fair price.
For repairs
Repairers need specific parts for each model. A Series 4 screen won't fit a Series 5, even though they look identical. The model number saves time and prevents incorrect orders.
Differences between GPS and GPS + Cellular
An important distinction that is evident from your model number:
GPS-only models:
- Only works with iPhone nearby
- No own SIM card possible
- Cheaper to purchase
- No monthly subscription fees
- Perfect for sports and everyday use
GPS + Cellular versions:
- Independent calling and sending messages
- Stream music without iPhone
- Own data connection via eSIM
- Red Crown on Digital Crown
- Monthly subscription required (€5-10)
Additional identification tips
Measure cabinet size without model number
Can't read the model number? Measure the case diagonally from corner to corner. Older models are 38mm or 42mm, Series 4-6 are 40mm or 44mm, Series 7-9 are 41mm or 45mm.
Recognize generations by features
Some functions immediately reveal which series you have:
- Always-on display: Series 5 or newer
- Blood oxygen measurement: Series 6 or later
- Temperature sensor: Series 8 or later
- ECG function: Series 4 or later
- Water resistant to 50 meters: Series 2 or later
Check the original packaging
Do you still keep the box? It contains the complete model number, serial number, and all specifications. This is useful for future sales or warranty claims.
Common confusion
Not all Apple Watches are a "Series." The SE models (first generation from 2020, second from 2022) form a separate line. They lack certain premium features but offer excellent value. Their model numbers also begin with "A," but have different number combinations.
The original Apple Watch from 2015 (retroactively called Series 0) and the Series 1 from 2016 are now outdated. These models no longer receive updates and lack essential features like water resistance.
Practical step-by-step plan for rapid identification
For those who want to know quickly:
- Grab your iPhone
- Open the Watch app
- Go to My Watch > General > About
- Note the model number
- Compare with the list above
Within thirty seconds, you'll know exactly which model is on your wrist. This information remains relevant for as long as you own the watch.
Conclusion
Identifying your Apple Watch model turns out to be simpler than you think. Whether you use the Watch app, the watch itself, or simply look at the back, you'll have the answer in a minute. This knowledge will immediately pay off when choosing new accessories , installing updates, or selling your watch.
Save the model number for later use; you'll avoid making the wrong purchase and get faster help with questions. This way, you'll transform a seemingly insignificant detail into practical knowledge that saves you time and money.
