Official mobile app of "&TEAM Official Light Stick” [Key Features] 1. Smartphone Bluetooth Connection With the Light Stick turned off, Press the buttons of the Light Stick simultaneously for 2 seconds to enter Bluetooth mode. (It will blink in blue) Turn on your smartphone’s Bluetooth mode and pair it with the Light Stick. 2. Concert mode Enter your concert ticket information and pair your Light Stick. You can enjoy various stage effects during the concert. This menu will be enabled several days prior to a concert. 3. Self mode After pressing the "Self Mode" button on the home screen of the app, connect the smartphone and the Light Stick with Bluetooth. You can change the color, brightness, and blinking effect of your Light Stick from the app. [Important Pre-Concert Information] - Pairing using the app can be done approximately one or two days before the concert. Please check your ticket before pairing your Light Stick. - You can proceed with concert pairing by tapping [Concert Mode] in the latest version of the Light Stick app. - Please keep the Light Stick firmware updated to the latest version. If there is an update, a separate notice will be posted on the official channel. - On-site congestion on the day of the concert may delay the firmware update and pairing speed or cause them to fail. Please complete the firmware update and pairing before coming to the concert venue. - Replace old batteries with new alkaline batteries before using your Light Stick. (three AAA batteries) - Using old batteries without replacing them with new ones may cause the Light Stick to fade, or flash in different colors then go off during the concert. Please prepare extra batteries. - The Light Stick will remain paired during the concert even if the batteries are replaced, and the light effect will continue automatically. ※ Required access permission To use the app and the Light Stick, the following permissions are required: - NFC : Required to check ticket information. - Bluetooth : Required to connect to the Light Stick.