● Unused Contents have been tested for power. Made in 2025 The "Nukunuku" is a cordless, rechargeable eco-friendly hot water bottle that can be used anywhere. It requires no troublesome water changes, and provides warmth for up to 8 hours after only 15 minutes of charging with a power outlet. It can be used as a warmer on your lap, as a bed warmer in your futon, or to warm your feet like a kotatsu by placing your feet on top of it. A great feature is that the warmth lasts until morning if you charge it for 15 minutes while taking a bath or before going to bed. *Please refrain from purchasing if you are overly concerned about details. *Shipping is not available to remote islands due to additional costs. Some items may be available, so please consult us in advance via comments. *Packaging will basically be simple, using bubble wrap. *Shipping methods may be changed depending on the prefecture. Customers cannot choose the shipping method.