The Victorinox Explorer Swiss Army knife is a great knife for travelling. It's a moderately large knife that includes a magnifying glass, and a wide variety of other useful tools. Prior to 2008, this model came with a gray colored magnifier.

This is second-most popular of the larger Victorinox knives in the "four layer" size range (the most popular model in that size range is the Huntsman).

Explorer-- same tools, transparent magnifier
Explorer Left Hand-- no hook, scissors with screw, grooved corkscrew, magnifier moved
Explorer 1980's-- no hook, scissors with screw, grooved corkscrew
Explorer 1991-- scissors with screw, grooved corkscrew
Explorer 1992-- scissors with screw
Explorer Original-- no hook, no sewing eye on awl, scissors with screw, grooved corkscrew
Explorer Original Left Hand-- same as Explorer Original but magnifier in different position

Explorer BSA-- adds mini screwdriver and Boy Scout logo
Explorer Plus-- adds pen, straight pin and mini screwdriver
Huntsman-- wood saw instead of magnifier and phillips screwdriver
Outdoorsman-- adds wood saw and fish scaler, no hook (retired)
Passenger-- no scissors or hook (retired and rare)
SwissChamp-- adds pliers, wood saw, metal saw and other tools
Voyager-- no magifier or phillips screwdriver, adds clock, pen, straight pin and mini driver