Features: 1.Made of high quality aluminum material, never rust and durable. 2.Easy to operate: Compact design with easy on and off button. 3.Rechargeable design, no need to use batteries, eco-friendly, save you batteries and money. 4.Great quality candler to watch the growth of fertilized eggs. 5.Not only fits to observe eggs incubation, but also suitable for school funny class or school laboratory. Specification: This is a high quality Egg Tester Lamp. Made of high quality aluminum material, never rust and durable. Rechargeable design, no need to use batteries, eco-friendly, save you batteries and money. Great quality candler to watch the growth of fertilized eggs. Not only fits to observe eggs incubation, but also suitable for school funny class or school laboratory. Features: Made of high quality aluminum material, never rust and durable. Easy to operate: Compact design with easy on and off button. Rechargeable design, no need to use batteries, eco-friendly, save you batteries and money. Great quality candler to watch the growth of fertilized eggs. Not only fits to observe eggs incubation, but also suitable for school funny class or school laboratory. Specification: Condition: Color: Black Material: Plastic + Aluminum case Power plug: US standard power plug adapter Temperature range: -10℃-60℃ Plug: US plug 110-250V Size: 20 x 17.5 x 7.5cm / 7.87 x 6.89 x 2.95 inch (appr.) Line Length: 105cm / 3.4 ft (appr.) Package Included: 1 x Eggtester Lamp Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.