buyer beware. i bought a neb on ebay and got a call a couple of months later from a cop in cincinatti. it seems the neb was stolen by a guy that worked at a supplier and even used their account to ship it to me! i gave the cop the serial number and he said the company was not looking to get it back but would contact me if they did. they never did, but it could have been a total loss for me. nice nebulizer - a proneb.