Description: Why does it can make you learning basic physics knowledge is that it can exercise your logical thinking by disassemblying our physics toys. There is an excellent electronic kit can enhance the knowledge learned from physics classes, which is easy enough for junior high school students and children. It is made from plastic and metal, is wearable to use. There is one size of the product to choose from. Our product is suitable for educating. Item Name: Physics Science Kit Material: Plastic, Metal Features: Practical Ability, Safe, Teamwork Ability Power Supply: 2 x AA Batteries (not Included) Size Details: Storage Box Size: 14.5cm x 8.5cm x 3.5cm/5.71" x 3.35" x 1.38" (Approx.) Single-pole Single-throw Switch Size: 7.5cm x 4cm/2.95" x 1.57" (Approx.) Small Lamp Holder Size: 7.5cm x 4cm/2.95" x 1.57" (Approx.) Battery Case Size: 8cm x 2cm/3.15" x 0.79" (Approx.) Wire Length: 25cm/9.84'' (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Storage Box 1 X Single-pole Single-throw Switch 2 X Small Lamp Holder 2 X Battery Box 5 X Lead 2x Bulb