I was looking for a 12 volt portable pump. I just came across this interesting tire compressor pump and Revain shipped it to me in 2 days. What caught my attention was that this pump runs up to 150 psi, has a digital gauge that auto shuts off at a certain pressure, can run 30 minutes without overheating, has a separate emergency light switch, can run from 10 amps, that's about it 1/2 the price of most devices. There were almost no reviews but for the price of two packs of cigarettes for my wife I decided to see if this little pump could do what I needed. fitted neatly into the pump body and I had no trouble putting them back into the pump after use. The pump comes in a quality case that measures just 6.5" x 8". The power cord easily reached up to 4 tires. The screw connection is slim, short and easy to use, with almost no airflow when putting on and taking off. I was able to take a 235/70R16 SUV tire from 8psi to 33psi in about 4 minutes. Inflating some tires that've lost just a few pounds will inflate again in fractions of a minute and of course turn off with the preset setting. Another plus is that the pump worked perfectly on my GOOLOO 18000 mAh starter. I have previously purchased an extra cigarette lighter socket/adapter. So the pump is well connected. The digital display has an orange backlight with characters that are easy to read even if you stand and look at them. The pump is securely fastened and does not vibrate during operation. It has rubber feet for horizontal and vertical use. It's too early to speak about durability or longevity but for now I think it's amazing quality and I give it 5 stars. I am very happy with my purchase.