Power Opener Can Opener. Tall enough to open a 7-inch-high can, this electric can opener is as practical as it is stylish. It has a knife sharpener in the rear as well as push-in cord storage, allowing for tidiness on the counter. The cutting lever removes for easy cleanup. Clad in gleaming white plastic, the opener measures 8-7/8 inches high, 4-1/4 inches wide at the base, and 3-1/2 inches deep. When operating, a magnet flips down and grips the top of the can, then lifts it off when the can is removed.