How do the different wattage modes work?
NORM: The output wattage is the same as your initial wattage setting; HARD: in the first 1.5 seconds, the output wattage is 15% higher, afterwards it will revert to the initial wattage; SOFT: in the first 1.5 seconds, the output wattage is 15% lower, afterwards it will revert to the intial wattage.