Article 22-2 (1) of the Information and Communication Network Act (information stored in the mobile communication terminal device and installed functions) You can connect your Seventeen official cheerleader with your smart device through a Bluetooth connection. If you register your seat number on the official cheerleader during the performance, the color will automatically change to match the stage production, allowing you to enjoy your performance more enjoyably. If you want to return the product, you must return the special gift as well. If you have lost the components of the items due to your negligence, a return will not be available. The application for use of Seventeen's official cheerleaders. Through the application, various lighting can be produced and controlled,

You can decorate your own application by setting the image of Seventeen member as the wallpaper of the application.