The Davinci is a great solid device that is a bit larger and heavier then most vapes. It’s also has some weight to it, the reason why I gave ut 1 star is for the flavor tube is wasted space no instruction on how to use it properly. The device also gets very hot to even touch sometimes. The main reason for the low rating is their customer service is the worse on the market. They don’t answer questions, no phone calls and when I had to return the device for repair no follow up, no responses to emails, just ghosted and it took 6 weeks to get back. This is an American company run by high school kids or people who do not believe in good customer service.