Product Name: LED Name CardPlace of Origin: ChinaLED display card operation instructions: 1) Press K1 to turn on the LED display card, it will displays AAA 2) Press K2 to choose the group (there are 6 groups altogether, among which the 1st group can store 512 characters, 5 other groups can store 256 characters), after you choose the group, confirm according to K1 3) Press K4 to choose the character form you want to display. (There are capital letter, small letter and special character for you to choose, please see the blank as below) 4) After choosing the character form, you can press the K2 or K3 to choose the letter or the special character you want to display. Confirm according to K1 after selecting a letter or the symbol each time. After you press the K1, you find that the letter you choose is wrong, then you can press K5 to correct it. That is, first press K5, then press K4 to choose the character form you want to display, after that press the K2 or K3 to choose the letter or the special character you want to display. Confirm according to K1 after selecting a letter or the symbol. After the correction you can continue to input what you want 5) Waiting for 10 seconds, it will show automatically after all choosing the display information wanted 6) The speed shown amounts to 9 grades, you can change its speed under the state that it is showing according to K4. One of the grade can make the displaying stop don\'\'t move 7) You can press K1 to take off it under the state of displaying 8) Operated by 2pcs CR2032 batteries