Fun Central AD623, 6 Pcs 13 Inches Assorted Flashing Light Up Heart Necklace, Glow in the Dark Necklace for Valentine's Day, Rave and Night Party SIZE: Flashing Heart Necklace is 13 Inches long with a multicolored string lanyard. PERFECT FOR PARTIES: Fun Central Assorted Flashing Heart Necklaces are perfect for different kinds of parties and events such as Valentines Day Party, Rave parties, Neon Parties, Birthday Parties, Christmas Parties, Halloween Parties, Concerts, Weddings and many more! PACKAGING: Package includes Fun Central Flashing Heart Necklaces and are packed in a plastic which includes 6 pieces of necklaces per pack. Batteries are included and installed. MANUFACTURING: These Light Up Necklaces are made from high quality plastic that is safe, non-toxic, environment friendly and a CPSIA Compliant. Each Flashing Heart Necklace is durable and no chemical odor. MULTI-USE AND FUNCTIONS: Light Up Necklace looks cool and adorable. To turn the LEDs on, just flip the switch "ON" at the back of the pendant.