If you want to look so fly. Wear this flashing bow tie. Make your shirt collar glow. With our flashing light up bow. Instructions: To activate, press the black button located on the back of the battery pack. Choose a still light or blinking LEDs. Length 12.5 in. – 17 in. / 31.75 cm. – 43.18cm. Bow Height 2.5 in. / 6.35 cm. Bow Width 4 in. / 10.16 cm. LED Colors: 6 green Batteries installed but not replaceable for this item.