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. Item Type: Egg Tester Material: Plastic Battery: 3 AA (not included) Color: As Pictures Shown Weight: Approx. 213g / 7.5oz The Total Length of Egg Tester: Approx. 15cm / 5.9in 1 x Power Plug 1 x Battery Box 1 x Egg Tester 1 x Bird Egg Tester Cap 1 x Chicken Egg Tester Cap