I am selling several units that I had purchased and kept at home. I have used them before, but they have been maintained by the company. I have performed a simple operational check for this sale. Please refrain from purchasing if you are looking for a completely pristine item. I will ship them in the cardboard box they were sent to me in by the company. I have several units in storage. Please contact me if you would like to purchase multiple units, as I will offer a discount.