Apple Watch SE (2nd gen, 44mm) vs Apple Watch Series 12 (46mm): Size & Dimensions

The Apple Watch SE (2nd gen, 44mm) and Apple Watch Series 12 (46mm) are most easily told apart by their overall size. On height, the Apple Watch Series 12 (46mm) measures 46.0 mm against the Apple Watch SE (2nd gen, 44mm)'s 44.0 mm — about 2.0 mm more. On width, the Apple Watch Series 12 (46mm) measures 40.0 mm against the Apple Watch SE (2nd gen, 44mm)'s 38.0 mm — about 2.0 mm more. On thickness, the Apple Watch SE (2nd gen, 44mm) measures 10.7 mm against the Apple Watch Series 12 (46mm)'s 9.7 mm — about 1.0 mm more.

The Apple Watch Series 12 (46mm) is the heavier of the two at 39.5 g, compared with 32.9 g for the Apple Watch SE (2nd gen, 44mm). That is a 6.600000000000001 g difference (20%). In daily handling the difference is easy to feel.