Classroom tool, a perfect tool for quieter students, to get the attention of the class. This talking button is made of plastic. This material is safe and no harm substance. Is it a bit nervous at work? Use our button toys to relieve emotions! Features -Material: PC -Size: 10.50X10.50X8.00cm/4.13X4.13X3.14in -Note: The lamp voltage: 12V -Note: color accessories Contact-resistance: 10 () -Perfect addition for any collection to really enhance gameplay! -New and improved design features lights, and is incredibly durable and ultra responsive! -Makes a great gift and is perfect for school, home, game night, workplace and so much more... -And you can use it to caution if a student starts in class. -And the volume of the pressing sound of the key is loud and clear, making it easy for everyone to join in the fun. Package list: 1 x button 1 x microswitch 1 light 1 x rack