USB-PD Type-C 65W Mini Hot Plate SMD Pre-Heater Soldering Plate, lets see if it works & whats inside

In this video i'm testing out a USB-PD Type-C 65W Mini Hot Plate SMD Pre-Heater Soldering Plate with a PCB etched heater on the top plate to see if it works as advertised and what makes it tick - seems to work ok the usb-pd negotiates 20 volts and after 4-5 minutes it can reach 218 degrees celcius and successfully de-solder an smd led from its copper tape - next test is a larger pcb from a retired epirb, it also successfully heats up a section of this multilayered pcb and i can remove components from the board - next test is a small pcb from a gsm modem, again it exceeds expectations and the entire board including the bga ICs came off without problems - next up disassembly showing the internals - re-assembly and one of the push buttons came off the board so needed to be re-soldered and i re-did the other button and the usb-c socket to make it a bit more sturdy...