... campaignDo you want to make your own letter on the flashing message fan ?just do it right ... 9LED OR 11LED OR 16LED OR 21LED-Switch: Button on/off -Battery: 3*AAA (no.replaceable) -Logo: ... ).Available letters,number,and symbols:A to z,0 to 9,+,-,*,$,@,!,( ),3).LED message fan ... Production: 4 lines*Monthly Capacity: 60,0000pcs*Quality control: CE, RoHs*Factory Management: ISO9001 International Quality ...