Okay, it's fine, it heats up quite quickly, as long as you have burned the coals well enough (I have a Tom Tom with dimensions 25*25*25), you put plenty of tobacco in the bowl, if not, it burns quickly. It lasts for about two hours if I fill it correctly. Be careful with the metal, it gets very hot. Also, the rubber bothers me a little, I would prefer it to be made of clay to be honest, but okay, even though it's thick, I hope it lasts. Also, clean the rubber well because dry smoke remains inside and then it doesn't come off easily, of course, and there is a lingering smell. Overall, I am satisfied, it elevates the hookah experience.