Feature: 1. Support plug in use instead of using after charging, which can ensure the use of uninterrupted power. 2. You can also use 3 x AA batteries for power supply, and you can choose the power supply mode according to your needs. 3. LED lamp holder, high power, strong light source, can clearly detect the incubation of eggs or bird eggs. 4. Made of high quality materials, safe and durable, which can make it have a long service life. 5. With an easy to use switch button, it is suitable for incubating eggs and also suitable for children to learn the process of experimental incubation. Specification: Item Type: Egg Incubator Light Material: Plastic Size: Approx. 15 x 4 x 4cm / 5.9 x 1.6 x 1.6in Battery: 3 x AA Battery (Battery Not Included) Voltage: 100-240V Package List: 1 x Egg Tester1 x Charger1 x Connecting Ring Note: Manual measurement, please allow slight errors