Multi-functional Use Adjustment-- With 2 speed ajustment, hot & cold double switch, and easy to operate. Cold wind: strong wind, small volume, large wind, fresh air; Hot air: rapid heating, defrost, defogging, deicing. Cardan Shaft Adjustment-- The base supports 360 degree rotation, free to adjust base on your need, the base can be unloaded, and with slot, practical and convenient to use. Cigarette Lighter Plug-- This Car Truck Auto Heater built-in fuse, automatic power-off protection when there is a safety hazard, safe to use. [Usage]: Insert the plug directly into the car cigarette lighter to lengthen the power cord. Easy To Heat-- High-temperature vents Scientific electric heating vents, half-speed quick heating. Grid Outlet & High Temperature Vent The air outlet is concentrated, it is not rust and not easy to accumulate dust. Scientific electric heating air vents, heat sinks are large and fast heating, and easy to warm. Specification: Material: Plastic Color: Black Automatic: No Input: 12V, 12.5A Maximum power: 150W Size: (12 x 11 x 4)cm Cord length: Approx.146cm Package Included :1 x 12V Portable Car Heater Defroster 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: 1. The temperature is not high enough while heating-two reasons: the car accumulator?s capacity too small or its quality not good enough. 2. Some old cars or those with a poor accumulator may have a problem that the heater is not strong enough. Although these cars?accumulators are 12V, but their currents are only 5A-10A. In this case, the heater won?t be as hot as general. For our product, the minimum requirement for current is 10A-12A.