A must have item for successful marketing of any of our flashing shirts at the retail level. This unit will allow you power up to six individual shirts at the same time. Simply take out the standard button batteries and hook the red and black alligator clips to the battery housing. Complete, illustrated instructions are included with each unit. Powered by two AA batteries (not included) it will keep up to six shirts continuously flashing for at least 60 days. A must for retail store, trade shows or other event. Shown here powering shirts that are hung up on a display chain.