Features: LED rotating gyro making electronic set can be disassembled and assembled, cultivate children's hands-on ability and creativity. Includes loose parts, need to assemble by yourself, with LED light effect Rotating gyro design, support multiple switching, easy to operate. Suitable for children aged 8 years old and above, enthusiasts interested in electronic DIY, and people who want to exercise their hands-on ability and creativity. Can be used in the family, school or DIY workshop, can be used as a science experiment, classroom teaching, parent-child activity and other auxiliary tools Specifications: Size：about 54x33mm/2.12x1.29in Feature:with LED light effect Type: Not assembled/ Not assembled with Battery Package Includes: 1PC LED Rotating gyro Making Set note: Due to problem of light effects,there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurements