Sound Isolation. Digital Stereo Earphones. Isolation Blocks Background Noise. Features: In-ear isolation design blocks background noise. High-performance 9mm neodymium drivers for deep bass sound. 3.5mm L-shape stereo plug. Silicone ear plugs ensure a perfect and comfortable fit. Specifications: Impedance: 16, 10%. Frequency Range: 20-20,00Hz. Sensitivity: 102dB, 3% / 1mW @1kHz. Rated/Max Input Power: 5mW/ 10mW. Weight: 14.8g.DISCLAIMER: The above description is provided for information only and does not constitute medical advice. Please consult your physician or the appropriately licensed pro