ITEM NAME:3Port 2in1 12V Portable Car Heater Fan Heater Defroster Demister Specifications: THIS IS FOR COLOR BLACK IF YOU NEED RED PLEASE GIVE US NOTES WHEN YOU PAY Material: ABS Plastic Color: Black,red Voltage: 12V Wattage: 150W Cable Length: about 1.2m / 47.24" Product Size: about 12.5 x10.5 x 4 cm How to use: Insert the 12V auto plug into car cigarette lighter socket fully. Position the switch to the designed setting(Heat, Off or Fan). Position the car heater on the floor or dashboard. Unplug the car heater when not in use. Note: The temperature is not high enough while heating-two reasons: the car accumulators capacity too small or its quality not good enough. Some old cars or those with a poor accumulator may have a problem that the heater is not strong enough. Although these carsaccumulators are 12V, but their currents are only 5A-10A. In this case, the heater wont be as hot as general. For our product, the minimum requirement for current is 10A-12A. Package includes: 1 x 12V Portable Car Heater Defroster.1 x 12V Portable Car Heater Defroster. Although these carsaccumulators are 12V, but their currents are only 5A-10A. In this case, the heater wont be as hot as general. Position the car heater on the floor or dashboard.