Features: One piece with one LED LED colors: blue, red, yellow,white,pink LED promotional necklace , led necklace , flashing pendant , light up necklace , blinking necklace , promotion gift, blue led flashing necklace1. It can be used as the promotion gifts , as well as , good decoration at a club, party, dancing,.2. Different shapes are available: Square, Rectangle, Circle, Heart, Martini Glass, ...