A handheld vaporizer is a type of vaporizer that people use when they want to take larger, longer draws. It is larger than a portable vaporizer and more difficult to transport. This type of vaporizer can be used when you want to enjoy a whole cannabis joint or pipe at once. A desktop vaporizer is typically more expensive than a handheld device and can sit on your desk as part of your smoking equipment. They are also much easier to use because you do not have to move the device from one position to another.