1. [Craft] The metal badge is polished by hand, each piece is unique, with it, be special you! 2. [Size]: Butterfly brooch 3.7cmx2.7cm(1.45inx1.06in) ,firefly brooch 4cm*4cm(1.57inx1.57in) 3. [How to use fluorescence]: Open the package, take out the brooch, illuminate it under close light for a while, and the fluorescence effect can be seen in the dark 4. [Material] This brooch is made of zinc alloy gold-plated, filled with enamel, polished and welded by hand. 5. [Luminescence]: This product is not a disposable product. It can emit light as long as it absorbs light. The duration and intensity of light emission are related to the degree of light absorption. ·It is recommended to avoid wearing badge jewelry for sports, and take off the jewelry before washing clothes. ·If you accidentally encounter water, wipe it with a dry tissue or cloth in time to keep the badge dry. ·If the surface is stained with dust, it is recommended to gently wipe the surface of the badge with a dry paper towel or cotton cloth. ·Avoid placing it with sharp objects, avoid wearing it with harder accessories at the same time, avoid hitting or scratching with hard objects, which are prone to scratches, scratches and deformation. ·Please put it in a sealed bag and gift box properly when not wearing it. ·The badges are all painted and welded by hand. If there are slight manual traces and dimensional errors, it will inevitably not affect the use and appearance. If you mind, don't shoot.