Usually it's called a trimmer around here. Because you use it to trim the bushes, hehe.

But stupid jokes aside, I used razors (for my face) only in my teens and early twenties, after that I moved to trimmers and occasional 'canadian lumberjack' look out. Trimmer are good enough for the face, armpits and most of the bush. At this rate I measure the lifetime of (disposable BIC) razors in years.