Kanjani 8 - High Chew Case that Lights Up in 7 Colors A prize from the 2012 Morinaga High Chew campaign. I probably haven't used it, and there's no insulating sheet. I thought about opening the screws, but they were tight, so I stopped (I wanted to avoid stripping the screws). It says the logo lights up in 7 colors when batteries are inserted, but I haven't tested it, so I'm not sure. It has been stored at home for a long time. Please understand this before purchasing. The strap, chain, outer box, and packaging show signs of aging. It will be shipped via Yu-Packet Plus (weekday shipping). Thank you for looking.