It uses a Silca pump style pump head, that threads on to the handle. And there is an available schraeder style head too.
The gauge is easy to read and has a large rubber bumper around it, to keep from cracking the glass if you happen to drop it.
It is rated up to 150psi.
When inflating presta tubes just keep in mind you can put pressure in, but you cannot use it to bleed pressure out. There is a pressure release valve on the handle that is used for release air from the Prestaflator, not the tube.
It is great for use when you are swapping out tires, or putting on tubeless tires. I don’t use it every day, but I have had it for almost 2 years and it has grown on me. I check the gauge against an external gauge I have and it is spot on.
The only drawback is that you have to turn on your compressor, I have a little Husky Air Scout that I use it with. That thing is LOUD, so I rarely power it up to just top off my mountain bike tires. But when I am changing a flat or swapping out my studded mountain bike tire it is nice. For $39 it sure makes your air compressor more useful, since I only used it on my car tires before. For a well made tool like this that is an amazing deal.
check it out: http://www.prestacycle.com