Fast 12-volt operation starts quickly to produce warm air and remove frost and fog from your windshield, giving you a clear view and safer driving. Dual-function design provides practical benefits: it defrosts and de-ices the windshield while at the same time heating the car cabin in seconds, helping you stay warm and safe during winter. Portable and easy to use: compact and lightweight, this auto heater uses a 12-volt outlet and requires no complex installation. Plug and play for all vehicle types. Durable construction: made from high temperature resistant materials, the unit remains robust under harsh winter conditions. Its shock-resistant and drop-proof design is a reliable partner for winter driving. Use scenarios: - Frosty mornings: quickly defog and defrost the windshield to restore clear visibility before driving. - Outdoor winter parking: warm the cabin while you get ready, improving comfort and safety. - Long winter trips: maintain a comfortable interior temperature while ensuring the windshield stays clear.