No product is perfect. Even so, I give this baby 5 stars. I love the design, and it feels good and solid in my hands. It comes with all the attachments that I need and a few that I am unfamiliar with. The functions are logical, and it takes very little to catch on to how it works. I tried it on my bike, and it was sweet. I loved watching it pressure up and stop exactly on the preset number. Now, I also had a tire on my car that by chance had just started warning me about low pressure. It was at 16, and I needed to get it up to 33. Yes, it probably has a nail, but no harm in trying my new gadget on it. Well, it was slow. Too slow. After reaching about 21 psi I ran out of patience and pulled out my big garage compressor. I think my new gadget would have worked, but it would have taken forever. It will likely be handy, though, for topping off those tires occasionally. For maximum performance, this is actually a good policy and it will be more likely to happen while I have my new toy. From what I have read all the small portable devices like these perform similarly anyway. This tool comes with a nice little cloth bag for storing and protecting it from scratches. Unfortunately, there is no room for any of the attachments. Although this would have made it just about perfect it is not enough to drop it a star. This was a hard choice between several cool looking models, but I love the orange aluminum shell, and am very happy with my purchase.

Update 9/12/2020
I forgot to mention that this baby pumps out 78% Nitrogen into your tires! (Sorry! This is a joke. It is actually TRUE, but if you don't get it, do some research on the myths of using Nitrogen in your tires.)

Update 6/18/2022
I am dropping the rating to 4 stars. Within the six months the aluminum frame came off. However, I did repair it easily with some glue, and it has stayed on since then. It is loud. Also, it scratches very easily, so I highly recommend keeping it covered with the little sleeve. Long term I realize that a bigger drawstring bag for holding the entire mechanism, tubing, and attachments would be preferable to the little sleeve. At almost two years, using it maybe once every 3 or 4 weeks, I notice that it doesn't work as efficiently, meaning it is slower to pump air. It is also louder. I think that it is wearing out faster than I would have hoped. When it is time to buy a new one I may look at other options.

A buddy of mine turned me onto this pump and I really like it. I use it for dualsporting and love the convenience. I like to run 20-22psi on the pavement but air down to 10psi in the dirt. The downside is, when I get back on the pavement, the bike is looser than I'd like (twisties on squishy knobbies are a little sketch). Using the little Co2 cartridge's isn't practical and is hard to dial in a psi. Hand pumps take FOREVER.
This pump is digital, easy to use and plugs into my bikes usb if needed. I like that I can select a desired psi and hit start and that's it. The battery seems to last forever and it fits nicely in my Neslon/Riggs tail bag.
The only thing I complain about is that I wish it had a protective case. When it jiggles around in my tail bag, the buttons can get pushed/jammed. So you have to be careful about how you store it. Also the functions are not super intuitive. Yes it comes with a manual but I don't carry it with me. So sometimes I'm just pushing buttons until I get to the setting I want. And I still can't figure out how to turn it off. It turns off on it's own, after a certain time of nonuse. The power button turns it on, and the manual probably tells me how to turn it off. But when I'm in the middle of nowhere and don't have the manual what do I do?
I've had it 2 years now and would recommend to anyone. looking for an affordable option for a bike pump.

It seems well made. Aluminum casing is attractive. I charged it for a while when i received it as per the instructions. Then it easily pumped up 4 bike tires to 90 lbs and 60 lbs using the presta valve adaptor. It still had with plenty of juice left. Also it packs with my gear very easily similar to a water bottle. I am very happy with the purchase. We will see how it lasts over the years. I order a few extra Presto adapters. One for each tire. The only improvement I would suggest is with the packing of the hose. Though the hose works well , the carry bag should be able to hold the pump, hose and possibly a few accessories. The hose is a bit long for the carry bag. Less chance of parts getting separated. .

After buying an inflatable piece of exercise equipment on sale, I discovered why - the pump it came with was incapable of inflating it. The cheap plastic frosting bag tips they decided to include instead of bothering with something that actually fit, ended up pleating itself just to get into the opening and the pump spewed more air out of the thing than into it.

The small number of adapters with this pump had me worried, but the first one I tried fit perfectly. The pump itself was easy to use. The hose and adapter went on with no problems, and the controls are easy to figure out. I appreciated that it arrived with enough power in it to be immediately useful. Many devices don't, and I can't be the only person who doesn't order things like this unless I needed it before I ever hit buy.

While I wouldn't want to try to inflate all 18 wheels on a shipping truck all at once with it, I anticipate we'll find plenty of uses for this excellent, tiny pump. The bag it comes with is adequate. I'll probably find something better in keep it in, so I don't lose necessary parts. As a small, household air pump, it's a little loud, but it's bearable because it works so fast.

None of the minor issues are enough of an annoyance to take away from this being a great little device, much faster than an old bicycle pump, too.

This seems like a good price for a tire inflator. I bought it for use for our two mountain bikes. My husband's front tire was low so we took it out to garage to give it a go. We have presta valves and we screwed that adapter onto the end as shown. My only complaint is that the directions are not very good. The basics are covered, for sure, but when it came to putting the amount of pressure we wanted into the tire - it was not easy. I have no idea how much was set on the device but my husband felt the tire as it inflated and when it felt full my husband stopped it. I think the packaging says you set the psi and then it shuts off at proper pressure. I'll just need to give a little more care in reading the part about tire pressure. The device plugs into a standard phone charger usb cord and recharges quite fast. Directions say to recharge after each use to keep the device working properly. So one use down, and so far so good.