Frē splits into two interlocking pieces along the outer edge, roughly two-thirds in front, one-third back. From the outside, the components don’t look too special, but they create an airtight seal thanks in part to a rubber ring that runs along the inside of the back. We’ve never been big fans of the way the plastic case feels—somewhat thin and cheap—but the fact that it’s so light is a good thing. The screen is covered…