The Lumipad is low maintenence, easy to use and allows any message to shine.ľIt hasľmultiple screen flashing patterns and speeds to choose from, and includes markers and anľA/C adapterľ(also will accept 4 "C" batteries.) Cleans easily with paper towel or cloth. Screen size is 16 1/4"W x 11"H. Unit is 22"W x 14"H.