This handy beer server is convenient for carrying around. It has an easy-to-hold shape, like a mouse. Compatible with 250ml, 350ml, and 500ml canned beers. It generates foam with very fine vibrations, creating a creamy, fine-textured head. I won this as a prize at a party, but I have no plans to use it, so I'm giving it away. Instruction manual included. *I plan to ship only the main unit, removed from the box.