Apple Watch Series 10 (46mm) vs AAA Battery: Size & Dimensions

The Apple Watch Series 10 (46mm) and AAA Battery are most easily told apart by their overall size. On height, the Apple Watch Series 10 (46mm) measures 46.0 mm against the AAA Battery's 44.5 mm — about 1.5 mm more. On width, the Apple Watch Series 10 (46mm) measures 39.0 mm against the AAA Battery's 10.5 mm — about 28.5 mm more. On thickness, the AAA Battery measures 10.5 mm against the Apple Watch Series 10 (46mm)'s 9.7 mm — about 0.8 mm more.

The Apple Watch Series 10 (46mm) is the heavier of the two at 36.4 g, compared with 11 g for the AAA Battery. That is a 25.4 g difference (231%). In daily handling the difference is easy to feel.