Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One Touch........most of the time

This can opener does open a can by itself, if it is a regular size can, but sometimes it takes more than 'one touch' to get it started. Once started, it goes all around the can and cuts it open from the side. It comes to a stop automatically. The top of the can comes off with the can opener when you take it off, but it does leave the very top edge of the can itself with a razor sharp edge and also leaves a 'shaving' or sliver of material hanging; paper or metal? Not sure, but usually leaves this little shaving of material you have to be careful not to get in your food. I have been using it, but I use it with care. I would not recommend it for a household where children may use it, I think there may be a saftey issue here.