Pretty and flashing this rainbow necklace is an awesome accessory! 6 bright LED lights are secured inside a flexible plastic necklace. Simpley put the necklace on and press the button to activiate the amazing rainbow light show around your neck. Unlike other necklaces or bracelets there's no magnetic connection so you don't need it to be connected for it to turn on. The necklace has 4 different light functions including random, flash around, strobe and back and forth. 28.5 inches in length.