22cm LED Scroll Display / Sign / Message

Features:
1) Screen matrix (H x W): 7 x 72 dots, chip LED
2) LED colors: red, green, blue, yellow,white
3) Character set 0-9, English and symbol of PC Keyboard
4) Single message holds 180 characters
5) Fast to slow run speed, 4 total
6) USD communication (USB to RS-232, COM3-COM5 commonly)
7) Runs over 8 hours on battery cycle
8) Rechargeable battery 
9) Cycle life: 500 cycles 
10) With stand