This thin eco-friendly desk calculator has a great design, sure to attract attention with its environmentally friendly leaf accent and biodegradable plastic case. This dual power calculator uses both button batteries and solar power. BioGreen products are made from environmentally friendly plastic which will biodegrade in a regular landfill within 18-60 months. BioGreen products are perfect for any eco friendly program. We can make just about any plastic item with BioGreen, so ask your HCL rep if we can manufacture or source a product made from BioGreen today.