1) LED:21 x 7 dot matrix.
2) memory: Up to 6 messages, up to 256 characters on each message.
3) messages automatically stored when switched off.
4) programmed characters are as displayed.
5) easy to program, simply scroll through the list using the up or down keys.
6) power supply: CR2032 button battery.
7)blue/red/yellow/green/white/Pink
Yellow-greenred/rainbow LED lights available.