Features: This part is high intensity egg candling lamp for monitoring egg development. It will let you see the fertilized eggs by showing a dark spot and veins at the beginning, The candle light was very helpful and really fun to watch the growth of the fertilized eggs. This egg candler provides high intensity lumens of super cool Led light for the ultra safe lumination of your eggs. You can check about once or twice a week to make sure that they were still growing. To confirm if an eggs are fertilized or not, This Light will let you see then by showing a dark spot and veins. You just can't tell before then. you can mark your eggs with dates in pencil so that you can keep track. Brand new, power by power supply, (not support charging). Long Electric cable, very durable with easy on and off button. The light candler tester is not just for someone who want to incubate eggs, it is also suitable for kids and students to learn the incubating process. Suitable for school funny class or school laboratory. Specifications: Plug: US / EU(optional) Material: ABS Color: Black Input Power: 100-240V AC, 50/60Hz Output Power: 3.2V / 300mA Packing: Carton Package Size: 16*10*6.5cm / 6.3*3.9*2.6in Package Weight: 186g / 6.6oz Notes: Please allow 1-3cm differences due to manual measurement. Package List: 1 * LED Egg Candler 2 * Candler Cover 1 * Adapter