You can listen to three-dimensional audio from compatible videos that move with your iPhone or iPad using spatial audio. 

It successfully mimics the sense of being in a movie theater, where sounds seem to be coming from all directions

 Spatial Audio takes the 5.1, 7.1, and Dolby Atmos mixes from a suitable movie or video to achieve this, 

 Reality Audio and Dolby Atmos for Headphones.

 According to the patent, Apple may be considering designing a wearable with a separate compartment set

 It looks that it will be a separate component of the watch that would protrude above 

the band and not be a part of the primary camera body.