Egg Candler: This is an LED egg tester made of high-quality ABS material, which is insulating, stable, and durable. Made of high-quality, durable, and wear-resistant material, it can be used for a long time. By completely blocking light and providing a super bright light source, which directs the light into the eggs so you can see how the embryo develops and moves. Perfect for hatching dark eggs and eggs with thick shells. Two Candling Lids: Includes two different sizes of rubber caps to accommodate everything from large duck eggs to small quail eggs. The power switch is located on the top of the lamp. Bright Enough: The high-intensity lamp is often used to monitor egg development, and the effect is best when used in the dark. Long lifespan. Easy to Use: Very easy to use by pressing the lamp's button. Not only for hatching eggs, but also for children and students to learn the experimental incubation process. Quantity delivered: 1 piece. This product is sold by xiaosong on behalf of a third party.