I love now having the convenience of keeping my car tires and a wheelbarrow tire properly inflated from home, and this tire inflator has every feature anyone could ask for: most importantly auto-shutoff for safety, along with the option to choose the type of tire or sports ball for the variations in best and safest inflation power, along with the appropriate nozzles included for each, adjustable preset pressures for each mode and adjustable types of pressure measurement units. I chose this brand out of the others because the specs gave a noise rating about 10 decibels lower than a more expensive brand, and decibel numbers being exponential, that's a significant difference. This model is also reasonably weighted at a little over 1-1/4 lb, and added 3-5 psi's to each of my car tires and all 30 psi's to a wheelbarrow tire in no time. My only caveat is that the instructions show a lever on the inflation nozzle only as parallel to the hose, when in fact it arrives sticking out at 90 degrees and is there to be moved up and down -- out to easily insert a tire or alternate valve nozzle, then down parallel to the hose for a secure clamp without twisting, then back up to easily separate the two. The instructions only say to "affix" the two without saying or showing how, and my first attempt by twisting could have risked the nozzle popping off and causing damage or injury in the midst of inflating! Hopefully the manufacturer will read this and will correct that oversight in the instructions