The app supports SF9 OFFICIAL LIGHT STICK VER.2. [MAIN FEATURES] 1. CONCERT MODE Pair your light stick with your concert seat information to enjoy various light stick performance during the concert. This menu will only be available during the concert period. 2. CONNECTING TO BLUETOOTH ON YOUR SMARTPHONE Press the button on the light stick for 3 seconds to set up the “Bluetooth mode”. Turn on the Bluetooth function of your smartphone and hold your smartphone close to the light stick to sync th