Ecology Hot Water Bottle Rechargeable Hot Water Bottle Electric Hand Warmer Energy Saving Eco-Friendly Brand new, unused item. (Features) ○ No hot water needed! A safe and warm hot water bottle ○ This is a rechargeable hot water bottle that can be used repeatedly by charging it with a household outlet. ○ Charging time is approximately 15 minutes. It's sufficient for use before bed or before going out. ○ Electricity cost per charge With a power consumption of 500W, and assuming 1kWh costs 25 yen, the electricity cost per charge is approximately 3-4 yen. Heat retention time: Approximately 15 minutes * Do not charge while the cover is on. * Please charge on a flat, hard surface. * During heat retention (charging), you may hear a "gurgling" sound like boiling water, but this is not an abnormality or malfunction. Please rest assured. [Usage Time] (Duration) Approximately 3-4 hours (indoors) (Duration) Approximately 6 hours (inside futon) [Heat Retention Temperature] Immediately after heat retention: Surface temperature of the insulation bag is approximately 60 degrees Celsius [Heat Retention Power Supply] AC100V 50-60Hz [Materials] Main body fabric: Polyester Heat storage container: PVC Insulation bag: Polyester [Size] Approximately width 270 x length 180 x thickness 80 (mm) [Weight] Approximately 1.3kg [Color] Ivory Sorry, no price reduction (*´ω｀*)