Product details:

Michelin knows tires as well as anybody. These licensed Michelin tire inflators feature a digital gauge accurate to 1 PSI up to 50 PSI. Every version offered—except the Micro 12V inflator, which is only designed to top off your tires—can fully inflate a whole tire in an emergency. Switchable between PSI, BAR, and KPA, they allow you to calculate exactly how much air you need. They even have a USB socket that can be used to charge other devices in a pinch.