How to Confirm Your Apple Watch Size
Want to confirm your Apple Watch size? Before buying an Apple Watch band, case, or screen protector, it's recommended to confirm the diameter of your Apple Watch. The easiest way is to check the engraving on the back of the watch.
Step 1: Remove Your Apple Watch
First, remove your Apple Watch from your wrist and turn it over. It's recommended to do this in a well-lit environment or use your phone's flashlight to make the engraving on the back clearer.
Step 2: Check the Size Engraving on the Back
The center or outer ring on the back of the Apple Watch typically indicates the series name and size, such as Apple Watch Ultra 49mm, Apple Watch Series 7 45mm, etc. The number before "mm" is your Apple Watch size.
As shown in the image above, the engraving on the back reads "Apple Watch Ultra 49mm," indicating that this Apple Watch has a diameter of 49mm.
As shown in the image above, the engraving on the back reads "Apple Watch Series 7 45mm," indicating that this Apple Watch has a diameter of 45mm.
Step 3: Record Your Apple Watch Size
After confirming the size, it's recommended to record your Apple Watch size, such as 49mm, 46mm, 45mm, 44mm, 42mm, 41mm, 40mm, or 38mm. You can use this size when purchasing Apple Watch bands, cases, screen protectors, and other accessories.
Apple Watch Size Compatibility Reference
- 49 / 46 / 45 / 44mm: Large size series
- 42 / 41 / 40 / 38mm: Small size series
Most Apple Watch bands are grouped by large and small sizes, and most in the same size range are compatible. Therefore, it's more accurate to confirm the size before purchasing a band or protective accessory.
Tip
- When checking the engraving, do so in a brightly lit environment.
- If the text is unclear, you can use your phone camera to zoom in.
- Before purchasing Apple Watch accessories, it's recommended to confirm your Apple Watch size.
- Cases and screen protectors should be selected according to the actual watch diameter.
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By following the methods above, you can quickly confirm your Apple Watch size and model, avoiding choosing the wrong size when purchasing Apple Watch bands, cases, or screen protectors.





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