Compatibility: 12V 150W car heater specifically made for Mercedes‑Benz E‑Class Sedan (1946–2025). Before buying, confirm your vehicle's cigarette lighter supports 12V/150W to ensure proper operation. Two modes in one unit: heating and fan. Use the switch to select heating for fast warm air that helps defrost and clear windshield fog, or switch to fan mode to increase cabin airflow in warmer weather. Fast heating and effective defrosting: the unit starts circulating air immediately and transitions to warm output to help remove frost and condensation more quickly than waiting for the car's main HVAC to warm up. volume circulating convection airflow helps distribute warmth more evenly through the cabin. Portable and simple to use: compact design plugs into the vehicle's cigarette lighter for quick, temporary heating or airflow wherever needed. Mode selection is done with a single, easytouse switch. Durable construction: alloy heating wire provides steady, longlasting warmth, resists aging under repeated use, and maintains performance under pressure. External components are built to resist deformation or cracking at higher operating temperatures. Practical across seasons: heating mode for winter defrost and added cabin warmth; fan mode for improved ventilation during spring and summer. A useful supplement when the car's builtin heater is slow to warm or when additional localized airflow is needed. Use scenarios Winter morning commute: plug into the cigarette lighter and use heating mode to clear windshield frost and reduce fog quickly while the engine warms up. Rainy or humid conditions: switch to heating mode briefly to remove interior fog from windows, improving visibility and safety. Warm weather or slow traffic: use the fan mode to increase airflow when you need extra ventilation without turning on full air conditioning. What it solves Cuts down waiting time for cabin warmth and windshield defrost. Provides immediate, targeted airflow or heat when the vehicle's HVAC is insufficient or slow. Offers a durable, portable solution that can be moved between vehicles if voltage/power compatibility allows. Note: Designed for the Mercedes‑Benz E‑Class Sedan (1946–2025) and requires a compatible 12V/150W cigarette lighter socket. Verify your vehicle's power outlet specifications before use.