The Fog uses 100% convection technology which is different than standard dry herb vapes which typically use conduction. While conduction bakes the chamber like an oven, convection uses hot air to heat the chamber. With instant heat up, the user essentially controls the temperature by drawing on the unit. Also features 5 temperature settings and a removable 18650 battery so you can always be ready for a good time! With dual functionality for both flower and concentrates, this unit is all you will ever need to remain in the clouds!