Although unopened, the packaging is damaged due to amateur storage. The following is from the online shopping site: Choose your crystal and develop your own lightsaber! Uncle Milton, a British manufacturer that develops scientific experiment-style toy items, presents the 4-Color Mini Lightsaber Development Kit from the "Star Wars Science" series! This is a science experiment toy that allows you to assemble the lightsabers that appear in the Star Wars movies, and it's a three-dimensional model with a total length of about 21 cm. It has a light-up function, and the color of the light blade changes by replacing the included red, blue, green, and purple crystals. You can create your own lightsaber. Also, two types of lenses, for focusing and wide-angle, are included, so it can also be used as a mini light with different patterns! This item, which is a must-have for Star Wars fans, is also recommended as a gift! Enjoy the world of Star Wars with this item, which can be enjoyed from the "science" aspect! ● Manufacturer: Uncle Milton ● Light-up function ● Batteries: 3 button batteries (LR48) required ● Size: Approximately 21cm in total length Item type... Penlight