Band Size Guide
Not Sure What Band Size to Pick?
Find Your Watch Model
What Apple Watch Do You Own?
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Apple Watch Ultra / Ultra 2 (49mm)
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Series 1–10 & SE: These watches generally come in two sizes: large and small.
We show these sizes on the website as: 44mm / 45mm / 46mm for the large and 40mm / 41mm / 42mm for the small watches. Apple changes the mm size almost every year, but the same bands fit all generations.
Example: Series 10 comes in 46mm and 42mm. Series 9 comes in 45mm and 41mm.
If you're not sure, please look at the back of your watch and find the size as shown below:
Still unsure? Email our team at support@robustgoods.com and we’ll help.