Description: Edison invented the world's first phonograph in 1877, Now let your children be the little scientist to see how the phonograph works Install the experiment device model as pictures shown, put 2 pieces 1.5V AA batteries in battery box, press the button, you will see the plastic cup shaking and hear a beautiful melody A perfect experiment to help kids learn the phonograph principle, and cultivate kids interest in science Material: ABS Plastic Color: As pictures shown (Random Color) Assembled Size(LxWxH): Approx. 10.5 x 7.8 x 14cm / 4.13 x 3.07 x 5.51 inch Specification:How to intall: 1. Remove the painted cover on both ends of the wire, then wrap wire coil around the iron nail 2. As picture shown, install the battery box and iron nail holder on the base 3. Install Music IC, iron nail and switch 4. Install the wires as picture shown 5. Put plastic cup on iron nail, and then put the magnet into the cup to conect with the iron nail 6. Put 2 pieces 1.5V AA batteries into battery box, turn on the switch. Now you can start the phonograph experiment Package Includes: 1 Set DIY Experiment Toy (Batteries are not included)(2 Pack) Note: Choking Hazard - Small parts not for children under 3 years. Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc., the color tone of the website's photo and the actual item could be slightly different. Also please allow a slight difference in size which may caused by manual measurement.