Incubator Egg Detector is detachable assembly, which is easy to operate. The optical condenser lens, illuminating thoroughly that helps you to observe easily. Made of aluminum alloy material, this Detector is bright and with simple appearance. This Candler can be used for a long time after charging, which is easy to carry and can be used indoors or outdoors. Features - Color: Red, Black -Material:Aluminum Alloy, ABS - Size: 11.30X3.60X3.60cm/4.44X1.41X1.41in -Note:3 X AAA Batteries are needed.(NOT INCLUDED) -Our egg candler provides cool and strong light, no heat damage to the embryo and is perfect for monitoring egg development. -In a dark place, put the egg in the mouth of the lamp, and judge whether the egg can hatch into a chick by observing the inner outline of the egg. -Brighter and cooler light sources are available which do not carry the risk of harming the development of the embryos. -When checking whether the egg to be incubated or not, just put the bigger side of the egg to upside, turn on the led egg candler and aim at the tops of the bigger side. -Lightweight, portable, and easy to carry and use, it can bring you great convenience. Package list: 4 Egg Detectors