Battery Powered Tin Can Opener Jar Lids Gripper by Xcellent Global M-HG058 Press the silver button down to the can edge, hold the black button meanwhile and the can opener automatically opens the can Safely cuts from the side leaving no sharp edges There is an "8" type Jar Opener attached this product, can open the variety metal seal can and no harm to your hands, an perfect tool at home as the helper in kitchen It will open cans with diameters up to 3.8 inch Suitable for anymost round cans. Power by 2 x AA batteries (Not included)