Official mobile app for the 2PM NEW OFFICIAL LIGHT STICK. [Guide to key features] 1. Bluetooth connection on smartphone - If you press and hold the button on the light stick, it will turn blue and you will be ready to connect. - Please put the light stick close to your smartphone and try to connect. - When the light stick and the screen of the smartphone operate in the same color, they are connected. 2. TICKET - If you register your ticket information during the 2PM concert, it will be automatically operated by the concert central control unit during the concert. 3. LIGHT CONTROL - You can directly control the light color, brightness, speed, and mode of the connected light stick. 4. SETTINGS - You can check the connected light stick and its remaining battery. [Caution] - Before watching the concert, please check your seat information from the ticket and complete ticket registration. - Please check if the light stick has enough battery. - Depending on your surroundings, downloading may take some time. [Instructions for essential permissions to use the app] - Bluetooth : Used to connect light stick