R7 Tire Inflator Portable Air Compressor, 12V DC Car Tire Air Pump with Auto Shut-Off Function, 150 PSI 3X Faster Inflation Portable Tire Inflator for Car, Bike, Ball, Motor

Great value. Super easy to use. Plug into power point, attach to valve stem, set desired pressure and push power button. Easy! Also i loved that it is small and compact plus it came with a carrying case.

love it. very handy and must have in your car. For diy monthly tire pressure check on my 3 cars makes it easy and quick. Very accurate, portable, easy to use and works great!

I got it for a great price, it's simple to use and works very well. You just set the number you want and it starts chugging. It's not super fast, but not terribly slow either. I had a leak and it to like 5 minutes to go from 13 to 33 lbs, which is fine. It fits into a nice small area of storage in the back of the SUV cause you never know when you might need it. And now I don't have to go to the gas station to top off the tires and keep them at the proper pressure. It makes it easy to keep up with that. The only reason it isn't 5 star is being just a tad sluggish, but over all it's an 9 out of 10.

I finally replaced the Craftsman automotive air pump that I bought in Kmart long before it went out of business. That air pump was primitive to today's standards having a small and difficult to read gage with no automatic shut off and a tire valve connector that was hard to get on and off. After trying out the new Rocgorld pump I must say I really don't miss the old one at all because the new one is so much easier to use. There are two large digital pressure gages, one showing the tire's pressure, and the other showing the automatic shutoff pressure. The tire valve connector is quick and easy to connect to the tire valve, and the controls are very intuitive. Like the craftsman unit, the Rocgorld is powered off the car battery via a cigarette lighter plug adapter. That may seem inconvenient, but considering that I live in South Florida where flashlight batteries left in a hot car have an extraordinarily short lifetime, the car battery powered pumps are a much better idea. I looked at many but this one really seemed to earn the Amazon Choice award!Update: I had a flat... the first time I used the pump it kept changing the mode (unit of pressure) but the next 4 times I used it before finally getting the tire fixed it worked perfectly. It pumped up my Jetta 16 inch tire from completely flat in 5-6 minutes. I'll keep it!

This thing does everything I need it to, just straightforward and simple. It has a power button and a couple power settings. I do notice that the readout is usually a couple psi off of the true air pressure, but its close enough that it doesn't really matter. It plugs into my car with the adapter and a couple minutes later the tire is full. I used it probably once a week while I had a slow leak tire before I got the tire patched.

Portable, erricient, easy to use. I inflated 4 way underinflated (11-14 psi) tires to 34 in about 25 mins. This included, moving and repositioning, set up and wrap up. This might seem a little long, but as a home shop tool, it worked just fine. Automatically stops pumping when desired pressure is attained. Great value. Beats feeding quarters/dollars and lines at the gas station. Perfect for minor home use. Have 2 more vehicles to do to say by-bye to the TPS light!

Quick fill up. Easy to use. I never will feel stressed about my tires and their inflation when they weather changes. I had a different one that was 20 yrs old and it was a pain, so glad it broke. This make thw pressure so easy to get perfect. Inflatable tires quick. The only thing I'd say is the cord length isn't super long. It was fine for my SUV and F150.

First of all, for the money, this is really a great product: good quality construction except my DC Port was not made properly: it comes out of its place exposing the wires inside the compartment.I enjoy the fact, it is very easy to attach to the valve of the tire; the length of the cord reaches my SUV fine, but for a really large vehicle, you might have to utilize other lighter plugs to get to the rear or front tires.The display is easy to work, but really cool? It automatically shuts off once the pressure you set, is reached!Other pluses: I like the cloth case that is provided that keeps the device from scratches...Overall, very pleased except for that DC Port that was not made correctly. So, I am working on either buying a new one, or seeing if I can return this and have it fixed.