I purchased this item for around 20,000 yen about two years ago and used it for about a year. I've kept it in storage since then, but I'm selling it because I don't plan to use it. The seat has been washed. The entire item has also been disinfected with alcohol as thoroughly as possible. The batteries are also new. Operation has been confirmed. Comes with the original box. The photos show everything included. Please understand that this is a used item before purchasing. While I haven't noticed any significant scratches, there are some minor scratches and sun fading from normal use. Please understand that this is a used item before purchasing. All accessories are included, but the instruction manual is missing. Assembly should be easy for anyone. If you are in Yokohama, Kanagawa Prefecture and would like to arrange a direct transaction, I will discount the shipping fee, so please let me know. Quoted from the following site: Melodies & lights activate in response to jumping Every time the baby jumps, a fun melody plays and the lights turn on! You can choose between a 5-minute automatic mode and a mode that reacts to the baby's movements. The melodies and lights that react to the baby's movements allow them to learn the cause-and-effect mechanism. Gentle melodies will lull a tired baby to sleep. Seat height can be adjusted in 3 stages The seat height can be adjusted to suit the baby's growth, allowing for long-term use. (Not for use by children whose necks are not yet stable, children who can get out of the seat on their own, or children who can walk. Guidelines: Suitable weight: 12kg or less, Suitable height: 81cm or less) The cushion seat surrounds the baby, making it comfortable to sit in for long periods! The seat can be removed and washed, so it's always clean! [Product Specifications] ●Size: H910 x W800 x D800mm ●Weight: 7.8kg ●Materials: PP, ABS, steel, polyester, cotton, PVC ●Target height: 81cm or less ●Target weight: 12kg or less