Fun Central AM613 12 pcs LED Light Up Bead Necklace, Long Beaded Necklace, LED Necklace, Glow Bead Necklace, Flashing Light Glow in the Dark Necklace, Flashing Lights Necklace-Assorted SIZE: Each Beads Necklace measures 25 inches in diameter which is just the perfect size to fit almost anyone. GLOWING NECKLACE: This Long Beaded Necklace is the ideal accessory to use during neon parties, rave parties, glow in the dark events, birthday parties, stage performances, Mardi Gras and Spring Parties and many more. PACKAGING: Flashing Lights Necklace is sold in packaging of 12 which includes: 4 x Red LED Necklace, 4 x Blue LED Necklace and 4 x Green LED Necklace. Each with 4 bright LEDs. BATTERIES: 3 LR41 Batteries are already included and installed within the Bead Necklace. MANUFACTURING: Made from high quality materials that are designed to be safe, non-toxic and nature-friendly. LED lights last up to long hours even if used continuously.