Great little product! Easy to use. Easy to understand instructions. Inflated 4 very low bike tires in 7-8 minutes. Inflation time was about 90 seconds each from about 35psi to 110. Worked great and shut off at desired pressure every time. I don't know how it would work on a car tire, but I think it would be good to "up the pressure" or inflate a very low tire enough to get to the gas station with no problems. Durability. . . couldn't tell. But it seems that the product is quite reliable. I also really liked the cute little card from the After Sales Team. We respectfully request a review and reminder of the one-year warranty and lifetime service. Nice gesture.