I saw them at the YOSHIKI Classical venue and wanted one, so I bought it during intermission and used it once on the spot. After that, I kept it in a closet with the insulation sheet inserted. Operation confirmed. It lights up in two colors as shown in the image. I haven't handled it roughly, but there are some minor scratches from use. Please refrain from purchasing if you are concerned. Uses button batteries (LR44 x 4) It's a set of 2, so you can X it! #YOSHIKI #penlight #XJAPAN #yoshikibou #yoshikiclassical