The traditional Swiss Army Knife already has a bunch of tools on board - knives, can openers, scissors, tweezers, bottle openers and the rest of it - but couldn't it have more? That must have been the question running through the mind of the creator of the Swiss Army Digital Altimeter and Thermometer.
As the name suggests, this updated model is similar to the original Swiss Army Knife, but it adds an LCD screen that can tell you either how high up you are or how hot/cold things have gotten. Incredibly useful? Maybe in certain specific situations. But hey, that weird little hook thing has never been all that useful either, but it's there for a reason. Who are you to argue?