1.Product name:Light up necklace 2.Shape: Cross shape(customered) 3.led color optional LED promotional necklace , led necklace , flashing pendant , light up necklace , blinking necklace , promotion gift, ... shapes are available: Square, Rectangle, Circle, Heart, Martini Glass, Star, and Bottle Cap, 3. OEM/ODM LOGO and shape you ... off switch There are 3 kinds of flashing mode. light up necklace