Review on NORSHIRE Portable Air Compressor - Mini Electric Tire Inflator Pump for Bike, Car, Truck - 2000mAh, 90% Metal, 0.01 Precision, 175PSI - OLED Touch Screen - Rechargeable Li-ion Battery by Daniel Postle

It's heavy but fits in my saddlebag. The controls are really sensitive. The real problem is figuring out how to change the default pressure. Unless you're actually attaching it to something to inflate, recommend something that requires 40psi east pressure. seems to be the factory setting) and turn it on, you don't know what the setting is, once you get to that pressure you have to use either + or - to set the pressure and then activate the pump to boost. If you look at the display in the top left corner, that's the default pressure, it's tiny, and the instructions don't really say anything about it. Need better guidance. It's new, so we'll see how it's calculated over the next few months and edit it accordingly.