While this is touted as full convection, the more i look at it the more i think its conduction. To be conduction, herb is meant to be touching the element which heats it. To be true convection it shouldn't. Like a pig on a rack, the heat is rising up to it but its not a grill. In this case, our herb is actually sitting on a grill and that grill is PRESSED tightly against the ceramic below it ( which contains the coil) so in my mind this device is not full convection, and its sold as convection but is actually conduction.