Please be sure to check my profile. This is a keychain-type light featuring characters from the Touhou Project. I don't know the official name. Pressing down on the silver part above the crystal section will make it light up. It's very clear when used in a dark place. The character is Flandre. I'm selling it because it wasn't what I expected. I bought it a long time ago, so I don't remember how much it cost. The outer box is damaged.