Feature:1. Cool LED Light: Irradiation with cold light will not damage embryo development and better protect the hatching life of eggs.2. High Power LED Lamp Beads: Egg candler is equipped with high power LED lamp beads, no heat, sufficient light, and durable.3. Monitor Egg Development: High intensity lights are widely used to monitor egg development and work better in the dark.4. Different Size Shades: Shades of different sizes can display different types of eggs, which you can change at will to meet your needs.5. Plastic Materials: The egg tester is made of plastic materials, durable, wear resistant, and can be used for a long time.Specification:Item Type: Egg TesterMaterial: PlasticBattery: 3 AA (not included)Voltage: 100-240VColor: As Pictures ShownWeight: Approx. 213g / 7.5ozThe Total Length of Egg Tester: Approx. 15cm / 5.9in.Package List:1 x Power Plug1 x Battery Box1 x Egg Tester1 x Bird Egg Tester Cap1 x Chicken Egg Tester Cap