Display Area: 48x10(mm) Matrix: 5x19 Number of LED: 95 Feature:Can store 1 message, total 120 characters -With 7 levels of speed to display, and 7 levels of luminance for adjust by user Data communication:Easily input by hand Power Supply:One CR2032 or two CR2016 batteries LED colour:Red, Blue, Green, Yellow, White, Pink, Three Colours Mixed Operation time:About 20 hours