Description: Made by safe and non-toxic environmental plastic DIY assembled educational scientific colorful fiber optic lights experiment 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 colorful fiber optic lights (It looks more beautiful in the darkness) Material: Plastic Color: As pictures shown (Random Color) Assembled Size(LxWxH): Approx. 10.5 x 7.7 x 16.5cm / 4.13 x 3.03 x 6.5 inch Specification: How to intall: 1. Install battery box, switch and wires on the base as picture shown 2. Install the LED bulb 3. Install the holder of fibers 4. Put 2 pieces 1.5V AA batteries in battery box, press the button, you will see the colorful fiber optic lights Package Includes: 1 Set DIY fiber optic lights Experiment Toy (Batteries are not included) 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 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.