As someone that needs to pump up a tire on my trailer often, this portable smart air pump is a godsend.In the box you get the air pump, a hose that's about 20 in in length, four different attachments for inflating various devices, a USB type-c to type c cable for charging, and finally a sturdy carrying case to carry it all in.When this first arrived the very first thing I did was charged it as it only had two bars of battery left in it. To charge from half to full took about an hour and a half so a full charge should take about 3 to 4 hours going by how long it took to charge it from half.Once it was fully charged, I am immediately started looking things over to see what all it could do. To start up the pump, you long press the power button for 3 seconds, and from there you have a few different options. You can adjust a manual pressure yourself, or use a preset for bicycles, basketballs, and even cars. I personally prefer to choose my bone pressure, but it's really nice to have some presets. The plus and minus adjust the pressure up and down when manually choosing, the little Sun icon activates the light on top so you can actually use this as a flashlight in an emergency situations, it does have a flashing mode to help get people's attention if you need help, and the circle with the arrows on the bottom part of the face pad is what you use to adjust between various presets, these presets have little image indicators letting you know what they are meant for. Including a car, a bicycle, a motorcycle, and a basketball. When you have a son in the upper right hand corner, that is where you would just your own personal settings.The big numbers on top are the current pressure in the tire or whatever you are inflating, and the bottom number is your desired pressure. Once it hits that pressure, the device will automatically stop pumping. Of course, you can manually stop it beforehand by short pressing the power button.My big test for this was to pump up a flat tire on my trailer that I use to haul wood and gravel. The tire was flat enough that the rim was almost hitting the ground, so it didn't have very much air pressure left in it. I decided to stop it early because it pumped up to where I desired it to be, and to hit that point only talk about 1 minute. I did not inflate it to a full 40 PSI as the train that I use it on, that pressure is too high.This thing is kind of hard on its own battery though, just that quick one to 1/2 minute pumping session was enough to drain the battery about 25%. So this is something to keep in mind as you will need to charge this relatively frequently.One feature I did not know it had until I started going through the manual was the fact that this can double as a power bank and can be used to charge something like your smartphone. On the back, it shows it has a 4x2600 milliamp battery, so that should be about 10,800 milliamps in total, which means you could potentially one and a half full charges for your smartphone, depending on the battery capacity and how low it is obviously. This also works the other way around, you can use your smart device to actually charge the pump as well provided you have the proper cables of course. For me, the included USB type-c to type cable works for that instance. As far as charging a smartphone, you would need a USB type A to whatever your device uses, via a lightning port if you are using an iphone, or most smartphones that are Android based typically use USB type-c nowadays. To charge up your device with the pump, the pump does need to be turned on so it's outputting power.Overall, I am very impressed with everything I've seen with this pump. Considering it's portable size, the fact that it runs off of an internal battery, and can be charged to use on the go, this is an impressive pump. The fact that it doubles as a power bank, and triples as an emergency flashlight, there's nothing negative I can think about to say about this pump. And it's something I highly recommend if you are in need of a pump to keeping your vehicle or on your ATV for an emergency.