1)external size:75x35x6mm,display size:51x13mm 2)10messages storable,255 characters max for each message 3)seven different colors are available(red,green,amber,blue,pink,white,mixed) 4)17x5 LED dots matrix,all message cycle display 5)characters applicable:A-Z,a-z,34 regular punctuations and symbols such as @,$,* etc 6)17 modes,8 speeds and 8 light degrees for display of each message 7)messages programming:key press 8)accessories:2pcs CR2032 battery,English manual