4 stars due to price. At such a low price, you really can't expect some incredible machine.

Positives: it gets the job done.

Negatives:

1) By far the most negative is that you have to screw the nozzle onto the tire valve. You lose quite a bit of air when unscrewing, so you have to add quite a bit more guessing.

2) I measured the power cord. It's not 3 meters, but it is 2.8 meters.

3) The compressor isn't exactly a powerhouse. Understandable at this price. Up to 30-31 psi, it seems to go like a bullet, but after that... it requires patience. To inflate the rear tire of my motorcycle to 33 psi, it took about a minute perhaps. To go even higher (to 34 or 35 psi), which I will lose due to unscrewing (see negative no. 1), it took even longer.

Overall: the flaws are overlooked at such a dirt-cheap price. Just because it doesn't have a battery, you can simply put it in your car and forget about it there, but if you ever find yourself in the middle of nowhere with a flat tire, it might save you.

I bought it for a long Adventure motorcycle trip. It is very compact in size and the gauge has very good accuracy (I measured it with a separate tool). In combination with a repair kit with a pump, it is perfect for emergencies or to inflate tires. I opened it and inside, it is cheaply made but with metal gears in the pump. I inflated car tires without any problem! I recommend it