The Siemens SL56 dual band 850/1900 MHz mobile phone departs from the traditional candy bar and clamshell designs with an exclusive "slider" handset that is eye-catching, small and easy-to-use. The 4,096-color display enables easy, vivid communication using features such as color picture messaging and calling images for caller identification. The color screen can also be used to display images taken using an optional clip-on mobile camera, which includes a built-in flash for low-light situations.