Lolssa $44 Tire Pump. Is it accurate? Can I trust it?

I bought this compact tire pump to take in my backpack while riding my electric unicycles. I tested it on two bicycle tires and two electric unicycles to see if it worked and if it is accurate.
#bicycle
#electricunicycle
#tires
#pump
#airpump
#tireinflator

[@ADadSupreme]

Interesting. Now I have another item to put in the Amazon cart... thanks! Hadn't thought of putting something like this in the car previously.