Not a fan in how the audio is integrated. My guess is it uses the Note 4 panel and is 1440p. Taking a guess that it's 90hz low persistence. The lenses are also wider FOV. The 360 degree positional tracking is achieved by adding the same IR markers like on the faceplate onto the back strap. Crescent Bay and previously the duct tape, HD and Crystal Cove prototypes were low quantity hand fabricated designs meant as technology demonstrators. Don't expect Crescent Bay to be available like DK2 was even though DK2 is a direct descendant of Crystal Cove. Every 3-4 months they come out with an iterative code name prototype. This just happens to be the most current ready to show. Industrial design is not playing a major role in the configuration or size of it yet. Expect two or three more of these sort of evolutionary prototypes to occur before consumer version 1 is out next year.

The headphones is the first thing they cut corners on.