Description The electric circuit kit is made of premium material, sturdy for long lasting use. Easy to use, follow the detailed assembly instructions, DIY design, which will produce electricity, it can arouse students' interest to learn, and achieve good educational effect. Features - Color: As Shown-Material:Plastic, glass, iron, copper- Size: 6.50X4.00X3.00cm/2.55X1.57X1.18in - Size: 20.00X1.00X0.50cm/7.86X0.39X0.20in - Size: 18.00X3.00X1.00cm/7.07X1.18X0.39in -Voltage of the bulb:2.5v.-Power supply:2 x AA batteries(not included)- By completing the tiny circuit science experiment project with your child, let your child experience the science.- Used in electrical experiments in primary and middle schools or home DIY circuit test, arouse students' interest.- Develop your child's imagination and hands-on ability, this science toy makes your child more interested in scientific experiments.- This educational toy emphasizes fun, exploration, and discovery, can be good gift choice to your kids.- Made of premium material, the circuits kits for kids can train your children's observation capability, scientific knowledge skills.Packing list: 1 x battery box(battery excluded)2 x wires2 x lamp holders