The SwissChamp can be considered Victorinox's current masterpiece. Consisting of 8 tool layers containing almost every tool, it is still small and light enough to be carried in a pocket.
The 91mm SwissChamp was introduced in 1985, and has had only slight modifications since. It has 33 functions and consists of 64 individual parts.

Victorinox makes larger knives, but the Swiss Champ is perhaps the largest knife that is practical for a wide application area and easily carried. (From SAKWiki)