De Vielle Rechargeable Electric Hot Water Bottle in Grey. De Vielle Rechargeable Electric Hot Water Bottle. Simply plug it in for 15 minutes before you go to bed for night-long heat where you need it!. Permanently sealed so no risk of scalding. New generation hot water bottle. Heating is provided by an element inside the bottle. Stays warm for hours. Extremely safe and reusable. Soft Touch