Julian is looking at the Apple Watch but heard that Leo thinks it's "dopey." Leo says that it is, but that's true with all smart watches right now. If Julian has a purpose for it, then it can be useful. But it's really more of a status symbol, even if it does have some interesting features.
Julian is blind, and he likes the accessibility features of interacting with his phone because the watch can talk as well. He likes that it can interface with Siri and Voiceover helps to read the time. It's an ideal solution for accessiblity and limited mobility.