Features: 1.The heater cannot replace the air conditioner to heat the entire vehicle, it is used to defrost and defog the car glass in a short time! Don't compare this to your home portable heaters, that is like 2000w vs 200w power difference ! 2. Cigarette lighter's output is NOT lower than 12V/ 12.5A/ 150W . Damage to your car will be occurred if lower than this ! Our car heater comes with 2 fuse tubes ,you can replace it by yourself when it doesn't work. 3. If you're delayed in a traffic incident you can also stay warm without running the engine.(Notice: In this case, it is not recommended to use the ? gear heating mode for a long time to avoid causing over-load on the car battery and engine abrasion). 4.The heating speed of the heater varies by the temperature in different environment. Generally, this heater's temperature will rise to 70 Degree C/158 Degree F within 1-2 minutes. 5. Don't blow the item in a short distance via the heater's mouth to avoid damaging the items in your car ! 6. All debris are prohibited such as shredded paper in the fan heater. 7. Never block up the air grilles. 8. The socket may be in high temperature after long time using , be aware of burns! Package Included: 1x 12-volt Car heater 1x Adhesive Pad 2x Fuse tube 1x English Instruction Manual FAQ WARNING !!!