The wide range of 15 sustainable calculators in MAUL quality offers precision and reliability, at the desk and on the go, providing a model for all needs. They are purely solar powered so no battery nor replacement is needed. The housing of the calculators is made of 80 % or 60 % (depending on the model) recycled plastics and the packaging is made of recycled material, free of plastics. All models have been certified Blue Angel and come with a 5 year warranty.