VCOM Wired Computer Headphones with Adjustable Microphone, Over Ear Stereo PC Headsets with Volume Control, 2x 3 Position 3.5mm Plug for School Home Office Business Call Center Skype Video Chat-Black SPECIFICATION: 6.89 feet long cord with 2 x 3.5mm plug type, suitable for PC, MAC, Laptop, Notebook and other devices using. COMFORTABLE WEARING: foam cushioning on headband and earsets providing comfort when wearing them with lightness which enables wearing of them for a long time without suffering discomfort through pressure on the ears. ADJUSTABLE AND FLEXIBLE HEADHAND: adjust the headset to a comfortable wearing position for yourself so you can enjoy music or your game. LIGHTWEIGHT AND PORTABLE HEADSETS: easy to carry. Suitable for office, classroom or home use or business, video or voice chat, gaming or entertainment. CLEAR AND GREAT SOUND: manufacture has experience spanning 21 years and well established as providing quality headphones (with CE, FCC and Rohs certificate) Driver unit: 40mm Impedance: 32 Sensitivity: 1063dB (at 1mW/1Khz) Frequency Range:20Hz-20KHz Max Input Power: 100mW Directivity: Omni-directional Frequency Range: 30Hz-16KHz Sensitivity: -583dB Flexible and Bendable: Cable Cable Length:  82.68 in (2.1 m) Plug Type: 2 * 3.5 mm 40mm loudspeaker drive unit can assure that the transmitting sound will not distort. Fitting type can stop the environment noise, enjoying the excellent effect and wonderful tone quality. High efficiency loudspeaker can bring you the shocked heading effect and strong power. Loudspeaker drive unit is made from complex mylar material, with excellent low frequency, abundant feeling of quantity, warm mid-frequency, very appropriate to express human sound and rock and roll. Part of ear pad is adopted leather cloak material, will some soft sponge filled inside, such soft sponge will make you comfortable while you are wearing it. Air permeability is also very good, you won&#039;t feel hot even wearing in a long time. The sound of each component have been professional test, wear it freely swim in the living space. There has not a mute button on the headset. Please low the volume by built-in volume control button if you want to mute. 2x 3 position 3.5mm plug for PC, desktop computer and other devices. Suitable for office / school classroom / home / business / video / voice chat / and entertainment.