The heater works precisely as specified, product arrived in perfect condition. If used as a defroster,
the car must be parked, as a handle-grip pops out, allowing one to defrost as though using a hairdrier,
directing a limited output of heat directly on the most important areas of the windshield...not an automatic
defroster for the whole windshield.
I would claim it is specifically of most practical use used as a heater for a smaller, insulated/ventilated cab.
Reviewed by: samus from portland, OR.