Heating Cup, PeleusTech 12V Car Cigarette Lighter Heating Cup Kettle Vacuum Insulated Stainless Steel Water Heater Mug Special cup cover designed for spill proof. Input voltage Car Cigarette Lighter DC12 V Heating up to 40-50 and then maintained at 40-50 through power supply Package includes car adapter for heating water easily in the car Suitable for Drivers, business man or any other kinds of people who need long time driving trip.can be used in cars, trucks, vans and caravans.