After briefly playing with this unit at a friend's kicthen I went to a local retailer to buy one, only to find they were out of it- so I bout the other, less futuristic looking Oxo can opener. As it turns out, I lucked out.My Oxo is still going strong after two years; it's the best hand can opener I've used. This model, though, has since been discarded by my friend. It works great for a few weeks, but then the plastic bits start to wear, and the locking mechanism starts to stick, and the user starts to swear.The idea for the lock was a good one- that seniors and others with limited hand strength could lock it on, using both hands if ncessary, and then concentrate on turning the knob. Unfortunately it doesn't work that way. The lock becomes more of an annoyance than a help, the handle isn't terribly comfortable, and ... well, it's just not a terribly good design.Oxo makes a lot of lovely products, so I suppose you can't fault them for the occasional turkey.