How about preparing for the cold winter? We've created an easy, warm, 2-step rechargeable hot water bottle with a cute insulated cover. ① Plug the charging plug into the hot water bottle for about 10-15 minutes! ② Once the lamp turns off, just put it in the cover! ＜Rechargeable＞ Rated Power Consumption: 400W Charging Time: 10-15 minutes (at room temperature of 20°C) Usage Time: Approximately 2-6 hours (up to about 8 hours) ＜Materials＞ Body (Hot Water Bottle): PVC, Polyester, PC, PP, Epoxy Resin, Copper, Stainless Steel, Water Charging Power Cable: ABS, AS, PC Insulated Cover: Outer Fabric/Filling: Polyester Inner Fabric: Polyester (PU Coating)