I bought this a while ago, but I've only used it a few times, so it's in excellent condition with hardly any signs of use. I replaced the batteries with new ones for this listing. This is the Topeak "iGlowCage B (i Glow Cage B)", which has an LED light embedded in the bottom of the bottle holder. It works the same way as a pet bottle lantern. The LED lights up in five colors: white, blue, purple, green, and yellow, and has two modes: steady on and flashing. It uses two CR2032 batteries. It can be used for 50 hours in steady-on mode and 100 hours in flashing mode. It cost around 4500 yen at the time, including the bottle. The bottle is not included. Please refrain from purchasing if you are overly concerned about minor details. It will be shipped by standard mail in a bubble wrap envelope. If you prefer tracked and insured shipping, it can be upgraded to Yu-Pack for an additional 500 yen. Please comment before purchasing if you would like this option.