Apple Watch Series 11 (46mm) vs Apple Watch Ultra 4: Size & Dimensions

The Apple Watch Series 11 (46mm) and Apple Watch Ultra 4 are most easily told apart by their overall size. On height, the Apple Watch Ultra 4 measures 49.0 mm against the Apple Watch Series 11 (46mm)'s 46.0 mm — about 3.0 mm more. On width, the Apple Watch Ultra 4 measures 44.0 mm against the Apple Watch Series 11 (46mm)'s 39.0 mm — about 5.0 mm more. On thickness, the Apple Watch Ultra 4 measures 12.0 mm against the Apple Watch Series 11 (46mm)'s 9.7 mm — about 2.3 mm more.

The Apple Watch Ultra 4 is the heavier of the two at 63 g, compared with 37.8 g for the Apple Watch Series 11 (46mm). That is a 25.200000000000003 g difference (67%). In daily handling the difference is easy to feel.