Stay cosy in bed this winter with one of these Rechargeable Electric Hot Water Bottles, the next generation in hot water bottle technology! No hassle and safe to use, as simple as charging your mobile phone! Simply slide the charging cover to the side, connect the charging cradle and plug it into the mains. After around 8-12 minutes your Electric Hot Water Bottle will have reached a temperature of 70-75°C, perfect for warming up your bed on a cold winter night.It will retain it's heat for up to 6 hours. Also great for use as a hand warmer or as a heat pad for soothing aches such as back pain etc.