The HYANKA 12" 2/4 Ohm Auto Subwoofer Sagittarius Series Black Magnetic is a high-quality car subwoofer designed for surround sound systems. With a speaker maximum output power of 1100 watts and a 12-inch diameter, this subwoofer delivers powerful and clear audio. Its dual voice coil and dynamic driver type ensure optimal performance, making it an excellent choice for car audio enthusiasts looking to enhance their listening experience. The sleek black design, car mount mounting type, and touch control method add convenience and style to this indoor-only subwoofer.