This is a rechargeable hot water bottle from 2023. I was keeping it as a spare, in addition to the one I'm currently using, as an under-blanket heater for my pet. I stopped using hot water bottles from the end of last year to around this time this year and didn't have any problems, so I've decided to sell this unused one. I believe I bought it at a home center for around 4,000 yen at the time. ① Weight: Main unit 1.7kg, total weight including power cord/cover/instruction manual/box is approximately 2 kg ② Cover color: The base color is white, with brown and black accents in other parts. ▷ The dedicated box contains the main unit, cover, instruction manual, and cord (everything shown in the image). (Although it's unused, I took it out and put it in the image for the purpose of introducing the contents) ▷ It heats up quickly and is easy to handle. ▷ It's cordless and stress-free, and you can use it again and again when it cools down. ▷ With some ingenuity, it can be used for various purposes, such as preventing coldness and warm therapy for bruises. * I have omitted a lot of the explanation in the text, as I believe the images provide a good overview. * I have confirmed that it works, and there are no problems with its use. * The warranty period in the instruction manual is one year, and the period has expired, so please be aware of this. * Although it depends on the frequency of use, it is a consumable item and will eventually stop working. In my case, I used it for about 5 months, every evening to morning, and I remember that it lasted for about 2 years. There are various hot water bottle products available, but I think this type from Three Up is quite excellent overall, considering its size and warmth. Thank you for your interest. I hope you will consider purchasing it.