Features: <br>Beautiful and unique design of cubic six sides can be pervious to light, in the same environment, different Angle different color rendering <br>100% quality optical glass, made of K9 optical glass, with better refraction and clear reflection. <br>Used as a teaching or research tool <br>Beautiful appearance, can be used for decoration <br>Can also be used in photography, which can produce a good filter effect <br>The product is equipped with a cool black gift box. After opening the gift box, the built-in light will be opened, colorful light will appear, and the light will be extinguished when closed <br> <br> <br>Specification: <br>Material: K9 optical glass <br>Size: 23 * 23 * 23mm / 0.9 * 0.9 * 0.9in <br>Power supply: 1* cr2450 button battery <br> <br>Package list: <br>1 x Optical Glass Prism<br>1、Beautiful and unique design of cubic six sides can be pervious to light, in the same environment, different Angle different color rendering <br>2、100% quality optical glass, made of K9 optical glass, with better refraction and clear reflection. <br>3、Used as a teaching or research tool <br>4、Beautiful appearance, can be used for decoration <br>5、Can also be used in photography, which can produce a good filter effect