This is a light stick from BTS 2014 LIVE TRILOGY EPISODE II. THE RED BULLET. It was only used once at the live show, but it's over 10 years old, so the outer packaging has holes and the adhesive tape is weak. I checked the light and it still works, even though I've never changed the batteries. The light stick itself also has small cracks if you look closely. Please refrain from purchasing if you are a nervous buyer, as it has been stored at home for a long time.