. Can store 120 characters . LED color can be chosen. One CR2032 or two CR2016 batteries. Easily input by hand Technical Specification Display Display Area: 48x10(mm)Matrix: 5x19 Number of LED: 95Feature - Can store 6 message, total1500 characters-With 7 levels of speed to display, and 7 levels of luminance for adjust by user-Display direction is verticalData communication Easily input by handPower Supply One CR2032 or two CR2016 batteriesLED color Red, Blue, Green, Yellow, White, Pink, Three Colors MixedOperation time About 20 hours