This works pretty well. Select the PSI with the digital gauge, and turn it on. It will inflate until it hits that PSI and shit down.
The only issue with mine is that the PSI ready a little high while running - so I will set it to 30, it will run until it reads 30, and then shut off. But then the pressure will drop a bit and wind up a PSI or two shy or what it was set to. You can toggle it off and on and it will try again, but you may need a few tries. I set it to 31, and turn it off for about three seconds, and then back on, and it will win up at 30. That works for me and it's not too much of a hassle. If it wasn't for that issue it would get five stars.

It's very fast for such a small pump. It is noisy, but not as bad as other 12v tire inflators I've had. The bag is nice, but I wish it had a small pocket for the accessory tips.

Just received it and tried it out on my minivan tire. Tire was about 12 psi low, and it took about 2 minutes I'd say to get it up to 35 psi. I was pleased with its performance. I purchased it for my son who lives remotely at college and if a car tire is low I don't want him to worry about trying to find and pay for filling the tires with air. The controls are pretty obvious with one exception in that you need to have the unit all setup on your tire first, then turn it on. I simply cycled the on/off switch and wallah it worked according to the instructions.

This FORTEM is Faster, Quieter, and has Better Features than my Wagan 3-IN-1. I bought 2 of these FORTEM's; one is for my Corolla and the other is for my wife's Camry. We tested both Fortem's on the Camry tires. Each Fortem inflated 2 tires. So we inflated 4 tires in all. With the car running, we plugged in the Fortem into the car's 12V outlet. The FORTEM said the tire pressure was currently 36 psi. So we told the FORTEM (i.e. by pressing the + sign) to increase the tire pressure to 41 psi. NOTE! Once the tire pressure is set to the psi you want, you MUST wait until the display stops blinking before switching on the compressor switch. This detail is not in the directions. If you try to turn on the compressor switch while the display is still blinking, the compressor will not turn on. Once the display stopped blinking, we switched the FORTEM compressor switch on and watched the tire pressure increase by 0.5 psi until it reached 41 psi. Once the FORTEM display reached 41 psi, the compressor ran another few seconds and then turned off automatically. This process only took the FORTEM about one minute ; which surprised me because my Wagan would take at least 2 or 3 min for the exact same thing. The FORTEM was noticeably faster and quieter than my Wagan. In addition, the FORTEM has a digital display and auto shut off, but the Wagan does not have these. Also, the FORTEM digital display is a lot easier to read than the analog needle on my Wagan. So far, I am extremely happy with the FORTEM; it's far superior to the Wagan. At this time, I am unable to assess the longevity of this product; however, the excellent warranty and the responsive customer service in the reviews, convinced me this was the product to buy. If anything changes on this product, I'll update my review.

Only had one use with this pump so far and I love it.

Cord is long enough with some slack.
Hose quick connects and doesn't involve screwing onto tire.
Light is bright enough to see what you're doing.
You set what PSI you want and the pump does the rest.
Cord and hose pack away into cutaway in back up pump.
Comes with a carry bag to hold pump along with pump adapters.

Hopefully I get many more uses out of this pump. I will update this review incase it dies out.

The pressure displayed is about a pound lower then 2 other gauges I used to confirm it's readings with. This pump does fill quickly, and once accommodating for the discrepancy in the displayed pressure it does it's job. I inflate the tires on my car to 32, I set it to 33 and it stopped on it's own a few seconds after reaching the set pressure I am content with that.

I bought this for my wife to make it easy to fill her tires in case she has an emergency on the road, she does not know how to do things like this and I thought it would make it easier for her. I had her use it and she seemed to get the hang of it quickly.

I did contact Fortem directly after receiving it to let them know the issue about the pressure inaccuracy and they responded right away and sent a replacement. I wasn't initially going to give 5 starts but do to the awesome customer service I would definitely recommend this item.