Milan 12-digit desktop calculator, +Edition series, white-turquoise colour. The calculators body and keys incorporate a biocide. The biocide is silver phosphate glass (CAS 308069-39-8) with antibacterial effect. Ideal to improve hygiene at school, in the office, in environments in contact with food and sanitary environments. 4 memory keys, square root function, Grand Total function and back key. Power off. Dual power supply: solar energy and 1.5 V battery.