Each cigar humidifier that we offer at Vanderburgh Humidors, is engineered with the utmost in German technology. The cigar humidifier requires very little maintenance and its batteries should last for up to a year in most cases. Be sure to use only distilled water, as you do not want to leave mineral deposits. The CigarSpa sits low in the humidor, producing humid air at the precise spot needed in the cigar humidifier. Vanderburgh Humidors are constructed using complex joinery and fastening techniques to ensure your humidor will withstand the test of time. Each CigarSpa has a 1-year warranty and is virtually maintenance free. You can put your trust in your CigarSpa cigar humidifier for perfect preservation.