Specifications: Material: copper Color: Black,Red Power: 24W Currently: 10A Voltage: 12V/24V Air flow: 300m3 / h Heat release: 2000W Speed: 3800 Control mode: Manual regulation Outlet diameter: 35mm / 1.38 '' (approx.) Inlet Diameter: 15mm / 0.59 '' (approx.) Size: 240x150x75mm / 9.5 x 5.9 x 2.95'' (approx.) Features: High heat conversion rate, real-time heating. Compact size, easy installation, energy efficient, low noise. Universal design to be compatible with different types of cars. Completely resolved the lack of energy, if the air conditioning and other problems. Low power consumption, high thermal efficiency, does not affect the performance of the original car. Cold winter, to enjoy the warm, eco-friendly benefits, widely used to increase the car's temperature. Connection method: Simply connect the plus and minus terminals of the battery (red line: positive, black line: negative). Note: Please allow 1-3 cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may have chromatic aberration as different placement of images. Package included: 1 x Car Heating 2 x Mounting Accessories