Apple Watch’s first true redesign is here. The Series 4 Apple Watch takes everything that made the Series 3 Watch great and makes it better. It’s better at keeping you connected with your loved ones and for keeping you fit. If you’ve been using the Series 1 or Series 2 Apple Watch, a Series 4 upgrade makes sense. But what if you’ve just bought a Series 3 Apple Watch last year? Should you plunk down $400 or more to upgrade? Read on to find out.