It only sprays for 4 mins and then the pressure is slightly less afther 3:45seconds and the hot rod takes to long to get to a very nice and comfortable warm like in an hour? The kit doesn't even have a small portable external battery. & the hotrod can only power from a car 12v! I said enough! The products on the right path but I'm afraid your stuck in the dark ages with idea. Wish I had enough money I could build this better and I'm just a kid!!! What do I know. Well I know I won't recommend this now that I've own it for a sometime now. I just was expecting more engineering in a product not this pro! Don't see the pro of itself,😏 my kids say "we could have made this ourselves in a diy and gotten a Nintendo switch DAD!! because that's more of a completed portable device"