These miniature light bulbs are ideal for physical experiments and education purposes. Designed to fit into various teaching instruments, they provide a reliable source of illumination. Their compact size makes them ideal for intricate setups, ensuring that your experiments are both accurate and visually clear. Features -Color:Multi -Material:Glass -Voltage: 2.5 V -Size:2.00X1.00X1.00cm/0.79X0.39X0.39in -Versatile use: ideal for physical experiments, these mini light bulbs are ideal for education instruments, making them a versatile choice for classrooms, laboratories, and home projects -Energy efficient: operating at 2.5 V, these tiny light bulbs are designed to be energy efficient, reducing power consumption while providing reliable illumination for various applications -High durability: crafted with precision, these light bulbs are known for their durability and long lifespan, ensuring consistent performance and reliability in all your experiments and projects -Compact design: the small and portable design of these mini light bulbs makes them easy to carry and install, providing convenience for users in different settings -Multiple applications: suitable for a wide range of uses, these light bulbs can be utilized in physical electrical experiments, night lights, crafts, and more, offering great flexibility Package list: 40 x Mini Light Bulb