Description This is a periscope model, made of plastic materials and good craftsmanship, and can be used for a long time. The detachable design makes this periscope convenient for us to use. It can be used not only as childrenand 39 s toys but also as props for optical experiments. In addition, it is also a holiday gift for child. Features -Color:Black. -Material: Plastic. -Size: About30.00X6.00X4.50cm/11.79X2.36X1.77in. - Made of plastic, strong and practical, durable to use. Great toy for teens to play with. -Periscope is an optical instrument that uses the principle of light reflection so this simple periscope can be as the teaching tool. -The periscope with detachable and splicing design is convenient to carry and store. -Suitable for children to experience the fun of optics physical experiment in the process of playing this fun gadget. -Put education in fun, cultivate scientific knowledge. Perfect for any school, or home use.Package list: 1 x periscope model Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin