It is purely mechanical, completely reusable, not easy to damage, and can be used for a long time.
It is small enough to fit in your pocket, only 3.3x7cm/1.3x2.8in of size, and you can drink a strong draft beer flavor even in a bar or restaurant.
Just slide it onto the bottleneck and pour it in. The operation is convenient and there are no complicated steps.
The beer will flow through a special screen structure, causing it to swirl, thereby reducing the CO2 content and maximizing contact with oxygen. This causes the natural taste of beer to stand out, just like freshly baked beer.
It is easy to clean, and it can be cleaned in the dishwasher without any problem.