Charger: Not applicable Light source: 9 LED Length: 120mmInside diameter of rubber ring: 30mmWidth: 36mmMaterial: PlasticBattery type: AAA (Not included)Switch: Press typePackage included:1 x LED Egg Cradle1 x Cradle CoverCold-light LED LampThe high-lumen cold-light LED lamp has 9 lamp beads, which can illuminate the egg well without harming the embryo in the egg, allowing you to clearly observe the change of life in the egg and the growth process of a life.Easy OperatedPowered by AAA batteries (not included), light weight, compact and portable design, easy to use.Easy Operated, Fast Safe Extremely Easy and Bright Enough.Powerful and PracticalGreat quality candler for checking if eggs are fertilized or growing.The growth of embryos in eggs can be clearly observed, which can be used not only for family breeding, but also for breeding farms. It is safe and allows children to observe the eggs and understand the beginning and growth of life. It is a good learning tool