Slice 5 Position Ceramic Blade Utility Knife

This is by far the absolute worst cutting product that I have ever had the misfortune of trying. After unboxing and inspecting the blade, I returned to the box looking for where the real blade was. Turns out: there wasn't one. The one that came in it was the real blade, and it's incredibly dull. Doesn't 'bite' into my fingernail if some pressure is applied; edge feels dull to touch. Doesn't really 'cut' so much as it tears. Cardboard that even kitchen knives can cleanly slice through like butter are difficult for the Slice's blade. I tried to remove the blade in order to flip it around and try the other side, thereby discovering that the blade lock mechanism is also terrible. Basically, after removing a small cover near the end of the blade, one has to apply considerable force to a very small nub that (in theory) unlocks the blade handle from the notch in the blade. Unfortunately, despite following directions to a T, I wasn't able to get the blade to budge out of position. After about 5 minutes of repeated efforts, I gave up, not willing to escalate my attempts with more force (and thus increasing the risk of an accident). In short: can it cut? Yes, but only when applying abnormally high amounts of force and pressure compared to a conventional utility knife, which in my opinion makes it an inherently unsafe design relative to other alternatives. When it comes to knife/blade handling, a dull blade edge should be considered a danger, as increased amount of force required to cut increases the risk of slipping and other unpredictable results. I'm super disappointed by this product, considering that other ceramic cutting tools I own (several knives and a mandolin) are all incredibly sharp and require very little effort to maintain. I'm re-boxing the product to return to Amazon.