Do your kids wanna experience fantastic DIY traffic lights assembling? Are your kids interested in projects? Wanna spark and encourage child's talents and passions and keep electronics learning interesting and fun? This fun DIY traffic lights assemble kit . Features - Color: As Shown. - Material: Plastic. - Size: 8.00X4.00X11.00cm/3.14X1.57X4.32inch. - Battery: 2AA batteries (not included). - The education kit can well attract kids' attention and let them try to build their own traffic lights. - This kit can well inspires and encourage kids to learn about science, STEM, basic physics knowledge. - This learning toy is good for , turning your own new ideas and inventions into reality. - , have more fun. Install this traffic lights assemble kits by yourself, then experience the fun of DIY craft. - It can also be used in school in science, STEM, technology and design courses, easy to meet your project needs. Package list: 1 set x kids toy