Apple Watch SE (2nd gen, 44mm) vs AAA Battery

The Apple Watch SE (2nd gen, 44mm) and AAA Battery are most easily told apart by their overall size. On height, the AAA Battery measures 44.5 mm against the Apple Watch SE (2nd gen, 44mm)'s 44.0 mm — about 0.5 mm more. On width, the Apple Watch SE (2nd gen, 44mm) measures 38.0 mm against the AAA Battery's 10.5 mm — about 27.5 mm more. They match almost exactly in thickness, at 10.7 mm.

The Apple Watch SE (2nd gen, 44mm) is the heavier of the two at 32.6 g, compared with 11 g for the AAA Battery. That is a 21.6 g difference (196%). In daily handling the difference is easy to feel.