Prior to activation, remove plastic insert located on battery housing. Press the button on the battery housing once to activate, to deactivate press again. Large Assorted Light Up Hawaiian Leis have one light function, to flash on and off quickly. Length: 31.0 in., 78.47 cm. – LED Colors: 2 Blue, 2 Red – Batteries: Includes 3 replaceable AG13 batteries. – Weight: 0.23 LB