New for Winter 2025 & Large Size 4-12H Long-lasting Warmth, Fast Charging, Energy Saving, Overheat Protection, with Soft Insulating Cover Large Hot Water Bottle & Fast Charging & Long-lasting Warmth: Larger than commercially available hot water bottles, the wider contact area allows for better heat transfer and efficient warming. This is perfect for cuddling against your stomach or placing on your lap. With fast charging, a mere 15-20 minutes of charging provides warmth for 4-12 hours! It can maintain a gentle warmth for approximately 4-7 hours at room temperature and approximately 7-12 hours inside a futon. (The specific warming time may vary depending on the usage environment). Warm Rechargeable Hot Water Bottle & Gentle Touch & Pocket Design: No need to replace hot water, this is a rechargeable, eco-friendly hot water bottle that can be used repeatedly. It warms your body gently without drying out your skin. The insulating cover uses a soft material made of short, fine fibers, which minimizes shedding and provides a fluffy, smooth feel. It can be used without worry by those with sensitive skin. By sandwiching polyester padding between the outer and inner fabrics, warm air is trapped within the padding, preventing heat from escaping and providing continuous comfort. Furthermore, there are pockets on both sides, so you can simply put your hands in and they will fit snugly, warming them up. It gently and precisely warms your body with natural warmth, perfect for those who are concerned about cold hands and feet. The cover can be removed and washed in a household washing machine (using a net) for hygienic use. High-Quality Safe Materials & Multiple Protection System & 70° Automatic Power Cut-off: The hot water bottle uses high-quality insulation materials and a 6-layer high-strength explosion-proof PVC design, eliminating the worry of water leakage and providing excellent durability. The hot water bottle has a design that separates water and electricity internally, so there is no need to worry about electrical leakage during heating. A temperature sensor is built-in, and it automatically stops the power supply when it detects a temperature of 70°C or higher during heat accumulation. Energy Saving & Eco-Friendly Hot Water Bottle & Perfect for Winter Gifts: This eco-friendly hot water bottle warms gently and is kind to both the earth and women. The electricity cost is about 2 yen per use, making it economical. Even if used daily for a month, it costs less than 100 yen, making it economical compared to regular hot water bottles that use tap water. Package Contents: Hot water bottle body x 1, soft insulating cover x 1, heat storage charger x 1, Japanese instruction manual x 1.