You're beginning to look a lot like Christmas! Slip on this fun, plastic necklace to light up any outfit. Order several of these Blinking Lights Necklace as delightful presents or party favours. Six colourful bulbs light up and blink (2 yellow, 2 purple, 1 red and 1 green). On/off switch. Button cell batteries (included; uses 2-CR-1220). 5-6 hours of continuous use. 30"l.