The Oster® Retractable Cord Stainless Steel Can Opener has a patented, power-pierce cutting mechanism that effortlessly pierces and cuts can lids. Its strong, magnetic lifter holds the lids for easy access and disposal. This Oster electric can opener automatically stops once the can is opened. It also has a built-in knife sharpener. You can easily hide the cord in the storage compartment on the back of the appliance. This unit opens cans of various sizes.