The compressor is small and lightweight, but extremely loud, heats up quickly, smell while running, needs a long time to recharge and is quickly empty. From about 6 bar, the compressor starts again, until it reaches 9 Bar. This also lasts quite a long time. For continuous work this device is therefore not suitable.
For maybe 5 hours of operation within six months he's still functional.
For 60 euros a decent device for small work. However, you should buy the compressor only when you can let it run in an enclosed space. The volume exceeds even that of the comparable Einhell BT-AC 200/24 OF - which has also built its faster printing.