Press and hold to switch on/off, press once to switch the monochrome function, press twice to switch the flashing functionPress three times to turn off the sound, turn off the function that is the same operation, press the function key for the corresponding number of times to turn off.,2-in-1 light up sabers Set include a Pack Extendable and Collapsable Sword, with Easy-to-Grip Design Handle and a Double Blade Dual Connector. Glow in the dark swords can even attach at the base to form double-edged LED sword. Kid can press the button to power up their intergalactic weapon, Pretend to be your favorite star fighting their wars and battles. Great for Light Swords, Galaxy Fighters Themed Parties, Halloween Costume Accessory, Office Stress Relief, shows, movies or cosplay props and treats, Christmas Xmas stocking Idea bday birthday gift and More Endless fun for boy, girl and adults. The lightup saber is made of high quality soft plastic. It is durable, Child safe, easy to use and Non-Toxic. Suitable for children 3 years ages and Up.