Professional Egg Candler USB Rechargeable Soft Cold Light Egg Hatching Tester Candling Lamp for Science Experiment 1Durable ABS Material: Made with premium ABS material, this egg candler tester is sturdy, wear proof and reliable, lightweight and portable, ensuring a long lifespan. 2360 Degree Illumination: Utilizing cold light source technology, this egg candler provides even and gentle lighting to illuminate every corner of the eggshell, allowing for accurate inspection of egg development. 3Portable and User Friendly: Powered by dry batteries (not included), this egg candler is not limited by plugs, making it convenient to use anytime, anywhere. Its compact size also allows for easy portability. 4Multifunctional Design: Not only suitable for inspecting egg development, but can also be used as a professional egg candler for incubators, catering to different needs. 5USB Charging Support: The plug features a USB interface design, allowing for quick and convenient charging through a computer, power adapter, and other devices.