... 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 ... , Star, and Bottle Cap, 3. OEM/ODM LOGO and shape you welcome.4. LED lights color: Red, Yellow, Blue ... with one wire lanyard and batteries. size: depends on your shape desigen.6. Batteries: 3*AG3 (included and dafault), ...