Our products are manufactured under strict ISO 9001 quality control standards, and are made by the same technicians, on similar production lines, that make optical instruments for Zeiss, Leica, Nikon, and Olympus. All AmScope microscopes come with a 5-year factory warranty, and a 7-day inspection period. If the microscope isn’t right for you, just contact us within the first week to receive an RMA number for return or exchange for a model that fits your needs better.