How to read and choose your Apple Watch size?
First, confirm your case size. This way, you won't buy the wrong strap and will easily find a style that "feels luxurious on your wrist."
If you wear an Apple Watch and are thinking of changing the strap, the first thing you need to know is your case size. If the size is wrong, no matter how beautiful the strap is, it might not be comfortable to wear. Below, we'll guide you step-by-step to confirm your size and help you find the BellaBia leather strap that truly suits your daily style.
Apple Watch Size Overview
Apple Watch sizes generally range from 38–49mm, which refers to the height of the case (not the screen size). The easiest way to avoid mistakes is to find your model first and then compare it to the sizes below.
Common Apple Watch sizes across generations are listed below:
Apple Watch Series 11 / 10
- 46mm case (approx. 1.9-inch screen)
- 42mm case (approx. 1.69-inch screen)
Apple Watch Series 9 / 8 / 7
- 45mm case
- 41mm case
Apple Watch SE (2nd generation) / Series 4–6
- 44mm case
- 40mm case
Apple Watch Ultra / Ultra 2
- 49mm case
Tip: The size refers to the case height (mm), not the screen size.
How to confirm your Apple Watch case size?
There are two simple ways to confirm immediately:
Method 1: Check the back of the case
The Apple Watch case size is engraved on the back, which is the fastest and most direct method.
Method 2: Use the Watch App on your iPhone
Open the Watch App → "All Apple Watches" to see the case size.
As long as the size is right, the leather strap will be comfortable and stylish to wear.
With love,
BellaBia
Sizes and models are based on official Apple information, and actual product availability may be updated.
