This is BIGBANG's official light stick. It was used only once, and the batteries are unusable due to aging, so I haven't been able to confirm if it lights up. However, since it was only used once, it should work if you replace the batteries. Please understand that I haven't been able to confirm this. It has been stored at home, so please refrain from purchasing if you are sensitive to this. This light stick has a distinctive BIGBANG design, with a crown-shaped top. - Model Name: BIG BANG Light Stick - Colors: Black/Red/Yellow - Accessories: Strap - Design: Crown-shaped top Thank you for viewing. Item/Type...Light Stick