three part: a. control box( attached to car's dashboard) b. host heating box( put under the seat) c. pipes. Function: 1. heating 420mililiter water to 100 centigrade within 15minutes. 2. use infrared ray as water blocking system, which allows you to operate with just one hand, without a single drop of water. 3. under the condition of low voltage of car battery, water dispenser automaticly stop working to ensure the priority of car function. 4. the introduction of medical grade peristaltic pump. 5. set water temperature at random as you want. It also adpt to different water boiling point caused by the change of alititude and atomspheric pressure. 6. before stop work, water dispenser back water in pipe and heating box to water tank to to prevent freezing in winter and breeding bacteria in summer. 7. automatically smelt ice when machines heating box is below 1centigrade. 8. luminous button can be operated in the night. specification: Voltage: 12V Control box: 105 í- 51 í- 61 mm Host heated box: 240 í- 160 í- 73 mm Power: 150w when heating for 12v Can ingore without heating Diamension: 409mm*348mm*135mm