Description: Car Heating Cup: Car kettle boiler coffee cup with automatic heating function and temperature display, multi layer protection, constant temperature design, long lasting heat preservation, and LED light to display the temperature in real timeMaterial: The Electric Kettle is made of stainless steel, which is high temperature resistant, durability, easy to cleanLarge Capacity: The Smart Heating Car Cup is the size for your travels, a travel cup with the right capacity to meet your needs every time.The actual capacity of cold water is 500ml. The capacity of boiling cold water into hot water is about 450ml12V/24V Universal: Electric hot water cup for cars, small diameter water outlet, convenient for school, travel, camping, coffee and gift givingPortable: The Heated Water Boiler is small, portable, you can carry it with you Specification: Cold Water Capacity:500mlHot Water Capacity:450mlNote:If the display screen is not bright and the product does not work, there are two possibilities:1. It may be overheated due to continuous water boiling. Wait for about 5 minutes before using it;2. Water has entered the base plate. Wait for 1-2 hours before using it.3.Please use this product when the car is started, otherwise the water may not boil. Size Chart: 23cmx7cm/9.06inchx2.76inch Package Includes: 1 Car Kettle Boiler1 Charging Cable1 tea infuser(Pls Note:Please use this product when the car is started, otherwise the water may not boil or it may not work)