My reading of that sentence is an assertion that the Apple Watch is the company's first device that has a design legacy older than the 20th century. In other wo

My reading of that sentence is an assertion that the Apple Watch is the company's first device that has a design legacy older than the 20th century. In other words, computers and cellphones and tablets are one kind of design challenge, something like a watch (or, say, a sword or a desk or a bicycle) represents a different type of thing for Apple to have to design and sell.