Microphone and Volume control Full Metal style head beam design, improve the overall texture headset at the same time enhance the durability Soft leather ear pads, comfortable design, suitable for long time use Use the ABS material, good toughness High-sensing two-headed pins and high-purity of wire to ensure conduction without loss, effectively restore the sound of quality Perfect for voice recognition Compact design, high sensitivity, perfect for Gaming, MSN, Skype Hardware requirements: a computer which have 3.5mm headphone and microphone jacks Color: Black, White Specifications: Headphones Speaker Diameter: 40mm Frequency Response: 20–20,000Hz Impedance: 32 Ohms at 1kHz Rated Power: 25mW Max Input Power: 50mW Cable length: Approx. 2.0m / 78.7inch Microphone Mic dimension: Approx. 6.0 x 5.0mm Sensitivity: -52 +/- 2dB at 1 kHzMax Directivity: Noise canceling Plug Type: 3.5mm