Brand Name: NONE Origin: Mainland China High-concerned chemical: none Signal To Noise Ratio: 90dB Material: Metal + Magnet + Plastic Impedance: 4Ω Audio Sensitivity: 90dB Model Number: Car Audio Speakers Types: Coaxial speakers Item Type: Speakers Special Features: Car Coaxial Horn Item Size: 4 Inch Model Name: PZ-4062B Certification: CE Voltage: 12 V Item Weight: 1.04 Car Make: Universal Color Name: Blue Out Power: 100W Frequency Range (Hz): 75Hz-20KHz