it uses halogen bulb uv free rated at 1000 hrs minimum, sense it is pre-heated by radient light, and then when the inhaler comes along pulls through the bulb chamber and then there is a combination of convected heat and radiant heat, the AroMed actually senses the product temp and makes adjustments automatically to maintain perfect temps.. i have found that then dusting of the bowl between 430 and 450f, depending on which hemp is loaded... a hefty bowl, about 3/4 full, which is about 1 joint and a 1/4 cig size, i think a full bowl would be 2 joints worth.... remember increase temps as flavor decreases.... this is a common thing that needs to be done with all vaporizers, but before i was lucky if i could get someone to get one flavor hit, now probably 10 to 20 good flavor hits (depending on how loaded the bowl is), and they all taste great and consistant every hit! VAPE ON DOOOOOOD!