Educational Toy:Ignite scientific curiosity with this toy, perfect for hands-on learning about electromagnetism. Interactive Electric Bell Design:Engage students with an interactive electric bell experiment, showcasing the principles of electromagnetic relay. Safety-Conscious Design:Designed with safety in mind, this kit warns of choking hazards and requires adult supervision. Complete Experiment Kit:This kit includes everything needed for a comprehensive electromagnetic experiment, fostering independent learning. Please check as much as possible to make sure the item is what you need.<br><br>Colour:Yellow Material:plastic Due to different batches, there may be differences in product appearance and printed text, which will not affect use<br><br>Package Contents: 1 * Electric Bell Experiment Kit<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.