Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Black & Decker Gizmo Can Opener

I bought this unit to replace an old B&D rechargeable can opener that had finally croaked after many years of faithful, flawless service. That model mounted flat on my kitchen wall. Unfortunately it has been discontinued, so I bought the B&D Gizmo opener as an approximate replacement. When I received it, I discovered that it requires an under-cabinet mounting location, but I don't have one available. This important fact was omitted from all of the several descriptions of the product that I had read at various websites. So my new opener is sitting on - and wasting - my precious counter space. With a modest amount of effort B&D could easily have made the base unit mountable either on the wall or under a cabinet, but they didn't. I would not buy this again.