So, what about making phone calls on the Apple Watch?

One of the most-touted features of the Apple Watch is phone calls. But how does it work exactly? The feature has often been couched as the realization of the two-way wrist radio worn by Dick Tracy, a comic strip character who made his debut way back in 1931. Apple CEO Tim Cook made reference to the fictional detective’s radio, designed like a wristwatch, in his March 9 keynote introducing the Apple Watch to the world.