Corded/Cordless Dual Purpose Digital Tire Inflator,Portable Air Compressor,Car tyre inflator,Supports Preset Tire Pressure and Auto Shutoff,with LED Lights for Car Tires and Other Inflatable Devices

Quick an easy charge as well as use.

This is easy to use with clear instructions.

These battery-powered air pumps seem to get better and better all of the time, and I am hoping this has the longevity that others I have tried have lacked.Tha pump is pretty compact and feels heavy duty. You definitely wouldn't want be carrying it ON your bike while riding but for pumping up the tires before a ride, or for topping off your car tires or other things it works great.It is covered with protective film with some quick instructions on the front of the film, and there is a small manual included. The manual gives you the basics in English, and seems straight forward.There is a USB C cable for charging it from a USB port, a velety bag to carry it all in, the hose and connector, a 12 volt cable for running it off a card, and a bag of accessory ends. This includes needle ones for balls, blower ones or ones that fit in larger holes for inflation, and a screw-on Presta converter.This charges at a fair rate from USB, depending on what you have it plugged into. It will not run the pump on USB, as there is usually not enough power on USB ports to run the motor and it will just switch to charging mode when plugged in to USB.But if you plug it into a car 12 volt lighter port it WILL run the compressor in addition to charging it.In the past I have had problems with running out of battery power or the batteries going bad, so this should still be usable even when the batteries are old.It also has a flashlight and a warning red light that can also blink, so it would be good in emergencies and especially in the car.You can also plug a USB cable into it and use it as a power bank. All nice features, not exactly something Iw ill use but nice to have.The bottom - where the 12 volt plug goes in - also is the fan vent so make sure when using it you don't cover this or try to use it while it is in the storage bag.It does work for topping off a car tire when it's just a pound or two, but I personally would not run it for long periods of time, I don't think it is made for large volumes. The manual mentions this but I wouldn't even run it for the ten maximum minutes the manual says is safe. It's really not made for that sort of volume, except maybe in an emergency.The controls allow you to turn the light on and off and of course step through the various air pressure presets via a little symbol for each one, and you can easily change these presets to whatever pressure you want it to stop at.Since I use it for bikes, I have the bike symbol set to the pressure for my road bike, the motorcycle symbol for my gravel bike, ball symbol for my wife's road bike tires, etc.It measures down to a half a decimal place and with my tests of the gauge and measuring it against a stand-alone high-accuracy pressure gauge, it looks to be completely accurate. It of course is hard to check while taking it off and putting the pressure gauge on and back and forth as there is a small amount of air lost, but it is very very close.Usage is easy and operates like other pumps of this kind.I have no complaints and would recommend this for biking and for cars and general usage. Very nice unit. I of course hope for a long life on the batteries, so far so good.

I have these portable automated tire inflators in all my family cars for me, my wife, and my kids. They are nice to have when you need them to keep tire pressures at the right level all the time without having to search for (and often pay for) air at a gas station. You can check and adjust the air in your tires when it is convenient for you wherever you are.Among all the inflators I have owned, this is easily the best as it is heavy duty, has all the key features you would want, and is super easy to use.WHAT I LIKE:* Heavy duty -- it is a bit heavier than others I have owned which gives me confidence in its power and robustness* Fast - takes around 10 seconds per PSI to add air to typical car tires (so maybe 20 seconds to add typical 2 PSI)* Quick attach - easy to install hose and easy to clip onto tire valve securely and quickly* Runs off internal battery or car lighter (if battery is not charged) - this is unusual and great in case you forgot to charge it and need it -- just use car battery. But also nice to run off internal battery when it is charged up so you don't have to fight the power cord as you move around the car between tires* Has USB-A output so you can use the battery as backup to charge you cell phone, tablet, or whatever - NICE* Has light that can be used for visibility in dark or to signal for help (flashing red)* Has good quality instructions -- both printed and as a sticker on the device (so you don't need to keep paper instructions with the device in the car)* Super easy and intuitive to use (so you don't really need instructions anyway) - 5 simple buttons to adjust mode, units, target pressure, light, and on/off.* Comes with carrying case (soft felt bag) that holds device and accessories* Comes with accessories for inflating sports ball or inflatable water toys/items* Comes with USB-C charging cord and cigarette lighter cord for emergencies* Accurate pressure -- Checking tire pressure with my digital pressure gauge showed consistent pressure of about 1 PSI lower than the target pressure I set on the device. Not sure which of the 2 is off by 1 PSI, but they are both consistent and 1 PSI is plenty accurate for tire inflation.* Excellent price - currently around $23 which is same as or lower than I paid for all my other inflators and this one seems nicer and has more features than any of the others.WHAT I DON'T LIKE:* Hose could be a bit longer to allow you to put it down if the valve is at the top of the wheel (but its easy to hold so no big deal). I guess the smaller hose makes it more compact for storage.* Strangely the PSI reading goes from 32 to 33.5 to 33 when filling up to 33 target. Weird. I think the 33.5 should read 32.5 since it keeps going so it "knows" it is below the 33 target. No big deal, just strange.* My power brick got a bit hot while charging the battery on the device -- I will keep any eye on it while charging and probably won't leave it plugged in overnight while unattended (not sure if this is a concern or not).RECOMMENDED: This inflator is a great option to keep in your car so you can keep your tire pressures where they should be year around.