The moment you push that flush side button and the abyss-like screen flashes on, you'll find yourself in watchOS 5. This upgrade is also available to existing Apple Watch owners, but there are a handful of features exclusive to the Series 4 that take advantage of the new hardware. Chief among them is a new watch face, the so-called Infograph face. This face is designed to take full advantage of that new display, and on the 44mm watch you really see it. The information almost feels like it's exploding out from the center of the dial and might escape if you're not careful.

The Infograph gives you space for eight complications on a single dial, with one of them being a little special. At each corner you can place what we'll call a "rich" complication, which gives you a little more information than previous complications did. My two favorites are the temperature, which now gives you the day's high and low in addition to the current temperature, and the moonphase indicator, which also gives you the time of moonrise at your current location. At the center of the dial, nested inside the main time display, you get three more basic complications at three, six, and nine o'clock, and then at 12 o'clock you can place a complication that gives you an extra line of information that swoops across the top of the dial. For this spot, I found myself using the calendar the most, though the activity complication also works nicely, showing your individual metrics all in one spot.