BE:FIRST OFFICIAL LIGHTSTICK is an application designed to be used with the official penlight of BE:FIRST.

The main features of the application include:

1. Concert Mode: This menu allows users to synchronize the penlight with performance data using Bluetooth, enabling various lighting effects during concerts. Please note that this feature can only be used during concerts.

2. Bluetooth Connection: By switching the penlight's switch to the bottom position, it enters "Bluetooth mode". When the smartphone's Bluetooth mode is turned on and the penlight is brought close, the penlight and smartphone will be connected.

3. Self Mode: Users can select their desired color on the penlight and smartphone screen, causing the penlight's color to change accordingly.

4. Battery Level Check: In "Self Mode", tapping the "Battery Status Check" button at the bottom of the screen allows users to check the battery level of the penlight. Please note that the displayed battery level may differ from the actual level due to battery performance and smartphone model.

Before attending a concert, it is important to check the battery capacity and replace it with a new battery if it is low to ensure that the wireless control light does not run out of power during the performance.

Please note that the application requires the following access permissions to function properly: Bluetooth for penlight connection.