Using it could not be easier, simply slide over the camera lens of your smartphone and switch on the camera function to instantly double the phones zoom power! Your smartphone automatically recognises the microscope and switches to Macro (close up) super zoom lens. Slide off and your phone reverts to normal. Built in LED auto on/off light brings images to life like never before. See skin, clothing and surfaces of any kind magnified in breath taking detail you never knew existed. Includes full instructions for use. Button cell (included). Size H6, W5.5, D3cm. For ages 14 years and over.