a programmable , moving display to be worn on a lapel or shirt pocket for promotional message reinforcement . the display includes a wearable display portion with a clip for attachment to a shirt pocket or coat lapel . a concealable battery portion is preferably connected to the display portion via an unobtrusive thin cable . moving alphanumeric messages are programmed by manipulation of five buttons , allowing a user to scroll forward through an alphanumeric character table , scroll backward through that table , enter a chosen character at a display position and subsequently advance to a neighboring display position , delete characters , and modify the rate at which the characters are scrolled across the display . the messages can also be programmed externally using a personal computer connected to a data input port on the display portion .