About Product:Lens diameter: 60 mm; Magnification: 3 x; 3 AAA batteries. 3 LED lights. The lens is protected by a clamshell, Which top service it easy to carry when folded. The height of lens can be flexibly adjusted \"according to The company vision requirements. After The collective dormitory turns off The light, Packaging: color box +PE plastic bag: the ability to see through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light through the illumination of light