Gemma is a pocket type assistive listening device. The device can process environmental hearing assisting, volume adjustment and can also be customized for individual requirements. Distinguish from those of medical devices; it looks like an ornament when it is attached on cloth. In addition, it is more portable with 40% less in size compared to others. Through the simple and fashion ID design with user friendly interface, the device make users not only easy to use but also more willing to get into public to open the wonderful social life.