1, Can input, store and displaying the information. Operated by two CR2032 batteries. 2, Can be input total 97 characters, , A~Z, a~z, number 0~9, and 35 pcs specialized letter. 3, Can be store 6 groups information, the first group can be stored 512pcs character, other five groups each group can be stored 256pcs character. 4, Can be display 4 characters at the same time in the displayer. The LED color have red/blue/green/yellow for your reference. 5, product size: 9.8x3.5x0.9cm (red, blue, green, white and yellow are available) 6, cartoon size: 45x45x20cm 100pcs/ctn GW: 6kg We also welcome OEM orders Application: Micro electronic billboard Display brooch Doorplate Car and toys' display screen