Ok Great ! I think that MY zapper is actually essential due to the extreme accuracy of the crystal controlled microprocessor. It's also packed with the best John Crane frequencies all at 100% positive offset. I like your zappers a lot. Nothing comes close. It does have a hell of a lot in a compact portable device. That makes it a lot more convenient to zap more hours.
I did a lot of research. You're way ahead of the rest right now.