But let’s not compare apples to oranges galaxies. Here's an original Galaxy Watch (left) for a game of "spot the differences."

The Watch3 has a smaller body, but a bigger screen (albeit at the same resolution). Also, its buttons are more classically watch-like.

But it's what's inside that counts, right? The Watch3 now has eight optical sensors and ECG capabilities—but in this edge-on X-ray, the most recognizable bit to our eyes is the wireless charging coil.

There's a lot of layers in there, so let's start teasing it apart.