Meet Spectacles. Snapchat / YouTube

In case you haven't heard, Snapchat now sells camera-equipped sunglasses called Spectacles.

The glasses, which record video to be shared through the Snapchat app, were first announced in September and officially went on sale Thursday.

Spectacles cost $130 and are initially being sold only through pop-up vending machines across the U.S.

Snapchat has been secretly working on these glasses for years, dating back to its acquisition of a small startup called Vergence Labs in 2014.

Here's everything you need to know about how Spectacles work and how to buy them: