100% it's a knock off copy. If it's $80 on the manufacturers website and you bought it on Amazon for $16 it is a counterfeit. I have had my share of buying counterfeit product on Amazon. Their shelves are full of it, and the third party sellers make a killing doing it. Amazon also does not care and they have previously removed some of my reviews of counterfeit product I have received before. It is literally impossible to tell what you are going to get when you order from Amazon because of how Amazon works. Amazon has ONE ad per product and every seller has to "attach" themselves to that ad. So, if you are selling that tach for $80 on Amazon and it has sold hundreds or thousands of real pieces and has good reviews, a counterfeiter literally uses the exact same ad, with the same reviews, attaches themselves to it and lowers the price. Since they have the lowest price they are the ones that will sell the product. So, if they lower the price to $16, that is what you see, the product at $16 with good reviews. So, you buy it and get the counterfeit. Since a lot of buyers have no idea what they are buying most will not notice that it is a counterfeit, or if they do its either too late or they never say anything. By the time Amazon gets enough complaints on it and kicks off the counterfeiter, dozens or hundreds of these may have been sold.
Even the prime stuff that they have in their warehouses is full of counterfeits.
