Description: brand new and high quality Feature: Broadband and noise reduction to achieve high-definition PC calls and prevent hearing loss. The microphone position can be adjustable according to different wearing methods, suitable for different people. Noise reduction mic, professional vocal unit, effectively filter the background noise, gives you clear sound voice. Volume control design on the earphone cable, easy and simple for you to control and operate. Imported sponge, dehumidifying and breathing;Pure tone speaker gives you clear sound quality without impurities. Can support USB V3.0, also for USB V2.0 interface. Plug and for play, it is for for Windows XP/Vista/7/8/10 and for An-droid systems. Suitable for various occasions: business meeting, online courses, and so on. Specifications: Item Type: USB Headphone Material: ABS+PVC Size: 17.5x16cm/6.8x6.2in Color: Black Headphone: Frequency response: 20-20,000Hz Resistance: 32 Sensitivity: 112DB minus or plus 4DB Plug Type: USB Mic: Frequency response: 60-10,000Hz Mic type: Omnidirectional Resistance: low Sensitivity: -57DB minus or plus 4DB Quantity: 1 PC Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x USB Headphone