I tested it on a 65 profile.....with a digital air gauge it went from 32.5 to 17 and in 5' it went to 34.5 measurement with the digital......supposedly all these cheap ones are for emergency situations to inflate a flat tire to go to a vulcanizer, don't expect miracles.....as for the amber it pulls around 6 so if you take power from the lighter all these sockets have a 10A fuse.....otherwise if someone doesn't want to they can use an adapter and plug it into the lighter. It also has a LED for light.....for the money, it's excellent.....
Durability? Don't ask........we'll see.

The power cable is not permanently connected and when someone disconnects it, the socket on the compressor moves strongly, which if someone does not pay attention, will soon remain in their hand. Otherwise, so far (limited use) it works quite efficiently.

Stay away!!! It's perfect as a little light (it has a power indicator light). Otherwise, by the time you unscrew it, you have lost 10 psi!!!!!!!!!

I accidentally ended up with this model, but it is quite powerful and for its price it has a perfect metal screw lock on the car valve. It inflates the air from 25 to 35 in less than 2 minutes