Transparent walls: you can see how many piles are left.
The device works by knocking on its surface or by pressing a button. Cooling box for 8 stacks (18.5x18.5x6 cm) should be stored for at least 4 hours in the freezer before use. It can work autonomously on the battery for up to 12 hours.
Transparent surface. Individual engraving on surfaces is possible: + 300 UAH / 1 surface.