I want to know why your Flaska is only useful for 4 years. Does the information transferring process cease after 4 years? Can the bottles still be used as an ‘ordinary’ bottle?

Our environment contains a lot of electromagnetic waves (natural and artificial) that eventually weaken Flaska’s functioning. With the existing technology, the 100 % effect of Flaska can be guaranteed for 4 years, after which it slowly becomes "demagnetised". Thus, in the fifth year the effect will still be about 80 to 85 %, in the sixth year and 70 % and so on. After that, the bottle can of course be used as an ordinary one.