Features: 1) Display: a) Display area: 48 x 10mm b) Matrix: 5 x 19 2) Number of LED: 95 3) Can store 1 message, totally 120 characters 4) With 7 levels of speed to display, and 7 levels of luminance for adjust by user 5) Data communication: easily input by hand 6) Power supply: one CR2032 or two CR2016 batteries 7) LED colors: red, blue, green, yellow, white, pink, three colors mixed 8) Operation time: about 20 hours