To be even more pedantic: ᴡᴀᴛᴄʜ
I looked it up, 0xF8FF () is the Apple symbol. If it renders as a square/rectangular box on your computer, it's because it's trademarked and a logo, which means you need an Apple font to render it. (Which I/you don't have, because Apple fonts only come with Apple computers.)
Just responding because I saw this comment was downvoted.
Font designers can put whatever they want there, and some do (http://en.m.wikipedia.org/wiki/Private_Use_Areas#U.2BF8FF)
Apple has standardized some characters in that range in its products, but there is no guarantee that you get an Apple logo there.
0xF8FF is in the Unicode Private Use range, so any font is allowed to put whatever they want there :) (If you're curious what your current font has: http://www.unicodemap.org/range/78/Private_Use/)