Article: Choosing the Right Apple Watch Band Size

Choosing the Right Apple Watch Band Size
At O2 Leather we sell leather watch bands that are compatible with all Apple Watch models. However, it can sometimes be difficult to decide on both the watch size and the wrist size. Understanding this issue correctly is important so that you can choose the right band to fit your Apple Watch.
Different watch sizes
The sizes used in Apple watches actually show the screen height of the watch. For example, the screen size (height) of the Apple Ultra watch is 49mm. Apple has tried to make the watch screen easier to use by enlarging it since its first release. Since different models have different screen sizes over the years, this has caused confusion among customers. Below are general Apple models and watch sizes.
- Older Models (Series 1–3)
38mm and 42mm: These were the original two sizes available for the earlier Apple Watch series. - Newer Models (Series 4–9 and SE)
40mm and 44mm: Introduced with Series 4 and used until Series 6 and SE.
41mm and 45mm: Slightly larger sizes introduced with Series 7 and continued to Series 9. - Apple Watch Ultra
49mm: Exclusive to the Apple Watch Ultra. - Latest Models (Series 10)
42mm and 46mm: Introduced with the latest Series 10.
Although there may seem to be many different watch sizes, there are actually two types of bands used for all watches. The first is narrow end bands, and the other is wide end ones. Narrow end bands are interchangeable with each other, and wide end bands are interchangeable with each other. In short, the interchangeability between bands are as follows:
Bands for 38/40/41mm, and 42mm (series 10) are interchangeable.
Similarly, bands for 44/45/46mm, and 49mm are also compatible with each other.
To determine your watch size, simply check the back of your Apple Watch (as shown in the below image). This information is essential when shopping for a compatible band.
Understanding Wrist Sizes
The second crucial aspect is your wrist size. Apple Watch bands are available in various different wrist sizes. At O2 Leather, we offer up to seven wrist sizes:
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X-Small sizes fit between 4.8" – 6.2" wrists.
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Small sizes fit between 5.4" – 6.8" wrists.
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Medium sizes fit between 6" – 7.6" wrists.
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Large sizes fit between 6.6" – 8.2" wrists.
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X Large sizes fit between 7.2" – 8.8" wrists.
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2X Large sizes fit between 7.8" – 9.4" wrists.
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3X Large sizes fit between 8.4" – 10" wrists.
To measure your wrist size, use a flexible rope or string. Wrap it around your wrist, mark the point where the ends meet, and measure the length using a ruler.
General Wrist Size Tips:
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Women typically prefer Small or Medium sizes.
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Men usually find Medium or Large sizes more suitable.
Choosing the Right Band
Not all bands are available in every wrist size. Some bands may only offer one, two or three wrist size options. Always check the product page for specific sizing details. If you prefer a custom size, please contact us for a custom watch band.