Apple has a variety of new watch faces built into watchOS 5. A couple are exclusive to the new Series 4 Watch, but older models will still have access to faces like Fire and Water, Vapor, and Liquid Metal. What you may not know about these faces is that they were all created using practical effects. Josh Rubin at Cool Hunting writes:

Talking to Alan Dye, Vice President of User Interface Design at Apple, about this particular project he shared that “it’s more of a story about the design team. We could have done this digitally, but we shot this all in a studio. It’s so indicative of how the design team works—bringing our best and varied talents together to create these faces.” Surely it would have been cheaper to just render fire, water, liquid metal and vapor, but this is what makes Apple special—putting in the time and effort to do something right and real might only be noticed directly by a few, but is certainly felt by all.

To see this watch face project in action, check out the behind-the-scenes video below.