Techtool Pro 4 (Mac only in Orange, CA

I have myself a new copy of Techtool Pro 5, so as it turns out I don't need my old copy of Techtool Pro 4. I'm not quite sure what the difference is or why the 5 version is better, but now I've got it, so I'd better use it. The Techtool Pro, version 4 that I have for sale is USED and is a disk utility for Macintosh only. The box is NOT sealed, however, it is in excellent shape and works fine. I have the original box, manual and the activation number is on the inside cover of the manual. The Micromat site can give you more info about all the features here