What size is my Apple Watch?

To find your watch size in mm, check the engraving on the back of your Apple Watch

38mm (Series 1, 2, 3)

40mm (Series 4, 5, 6, SE)

41mm (Series 7, 8, 9)

42mm (Series 10)

44mm (Series 4, 5, 6, SE)

45mm (Series 7, 8, 9)

46mm (Series 10)

49mm (Ultra 1, 2)