LED mask. It's possible to display characters and symbols on the LCD using LEDs. You can connect it to Bluetooth and display your favorite characters from your smartphone, or even load and display images. It comes with a Japanese instruction manual, and the linking and operation were easy to understand. I was planning to use it for a Milky Subway Max cosplay, but the meetup was cancelled, so I'm selling it unused. However, I did open it once and tested it to confirm it would connect to a smartphone. It connected to my smartphone properly, and it was possible to reproduce Max's eyes by loading an image. It was a bit expensive because I ordered it from overseas. Although it's almost unused, please consider that it has been opened before purchasing.