Bose seems to have done away with the numbered system that included the QC 15, 25, 35, 45, and 700 headphones and now ... while Black and White Smoke are available for $329. In addition to Bose ...

While the Bose 700 Headphones were an all-black finish ... adjustable arms and earcup-holding sections (this is the same in White Smoke, but an I-really-don't-like-it gold finish for the Sandstone).