Feature:1. User Friendly Design: The egg tester light is designed for ease of use, making it an ideal gadget for students, home incubators, and even beginners in egg incubation.2. Adaptable Attachments: Egg candler tester comes with flexible attachments, featuring soft rubber ends that can easily adapt to various egg sizes, providing versatility and convenience.3. Egg Development Monitoring: The strong light source ensures you can clearly see the delicate veins and movement within the egg, even allowing you to witness the chick trying to break through the air sac.4. Secure Grip: Whether checking quail, duck, or chicken eggs, the gentle yet firm grip ensures a close seal without the risk of breakage, providing protection and convenience.5. Ideal Educational Tool: Our egg candler is perfect for classroom enjoyment in schools, allowing children to experience the hatching process easily and joyfully.Specification:Item Type: Egg Candling LampMaterial: Plastic, RubberBattery: USB rechargeable, battery compartment requires 3 x AA batteries (batteries not included)Size: Approx. 15 x 2.5cm / 5.91 x 0.98in.Package List:1 x Egg Candler1 x Battery Compartment1 x Data Cable2 x Accessories