I received the package very quickly, which I was surprised about. As far as functionality is concerned, it's great. I tried an 800W drill, an 800W carbon grinder, a 100W tinsmith and a 150W sander. Everything was connected at the same time and it worked fantastically. It has one problem that the display shows almost nothing except the frequency. 75 HRK too. At the same time, I measured with an oscilloscope and everything is ok. At 13.5V, it gave 227V 50hrs. And it remained even under load. What can I do with the display to make it work for me. When it was first plugged in and when it was turned off, it sparkled a little, but then it went well. Please advise me why the display does not show anything. The remote control works flawlessly. Thank you Vevor for a quality product. I recommend it.