Our LED Green Clip-On Blinky is a great choice for St Patrick's Day, rave parties, nightclubs, discos, and any other special event where green fits your color scheme Clip them on your shirt or wear them as earrings. Twist the back of this LED Clip On clockwise to turn on and counterclockwise to turn off. Featuring a very attractive green flashing LED light in every night party you will attend. Batteries are included and installed. Sold 1 piece of LED Clip On per pack.