Product material: aluminum alloyProduct size: 22.3*4.5*4.5CMFeatures: easy to operate. Correctly install the AA battery according to the positive and negative signs. When in use, press and hold the "start button" at the bottom to remove the cork, and press the "reverse button" at the top to withdraw the cork;Operation and use: Before using the electric bottle opener, correctly install 4 AA batteries according to the + and - signs in the battery compartment; it is recommended to use 4 AA alkaline dry batteries, which are high-energy batteries/power type. The battery (instantaneous discharge capacity of 3-4A) can provide enough instantaneous discharge capacity for the electric bottle opener to open the bottle to ensure smooth bottle opening.The product does not contain batteries, you need to purchase batteries separately