... Service ---Fast and FlexibleSpecifications:To turn on the switch, the fan starts running. It is easy to use. Fit easily ... your pocket, easy to bring. It flashes customer company’s name, telephone, words and slogans, etc. Materials: blade-PVC; case ... Led colors: red, yellow, blue, green, white.Hand colors: red, black, green, blue, yellow, transparent, or customized color. usb programmable message fan ...