Our pocket stereoscopes are ideal for students and professionals as a field and office tool. The use of high quality glass lenses and strong construction ensures top quality images. Specifications: Materials: Tough, durable ABS plastic for all parts. Legs: High Grade Stainless steel. Lenses: Crown glass lenses. Magnification: 2X and 4X available (2X advisable for schools) Storage: Vinyl plastic pocket. Weight: 0.12kg (0.22lb)