I have two different epilators. The first one I got was a CLIO. It worked but it seemed to take forever to clear the shrubbery. Many many passes. I recently bought an Emagine by Emjoi. It has a double head configuration with more tweezers and is much faster than the CLIO was. On the plus side for the CLIO, it was battery or cord operated. The Emagine is cord only and the power adapter could have had a few more feet of wire so I didn't have to sit next receptacle. Really, I usually use an extension cord.
The hair is not permanently removed. Some of it is when the follicle is damaged enough to not regrow, but it may take many years to eliminate most all of it. I have found that often the hair is not pulled out but broken off close. So the regrowth is very staggered with a little stubble appearing in a few days and major regrowth taking a week or more.
Stephanie