The De Vielle Luxury Rechargeable Electric Hot Water Bottle is a new generation hot water bottle where heat is provided by an element inside the bottle. It is extremely safe and reusable and only takes 15 minutes to heat up, with heat lasting up to 6 hours. When ready, the hot water bottle can be disconnected and hours of heat are provided. This hot water bottle can be used in the same way as a standard hot water bottle and can be used to warm or ease muscle aches or pains on your stomach or back.