ddsgg headphone with microphone, active noise canceling headphones, 3.5mm audio jack, portable wired earphone suitable for smart phone tablet pc mp3, 3 pieces,black red,c ddsgg speaker size: 40mm<br />sensitivity: 105±3db<br />frequency range: 20hz-20kh<br />microphone: 6.0×5.0mm<br />microphone sensitivity: -38±3db<br />directionality: omnidirectional<br />cable length: 2m±0.15<br />led working voltage: dc5v±5%<br />headphone jack: type a, usb + 3.5mm 4pin (1 plug); type b, usb + 3.5mm 3pin (2 plugs); type c, usb (7.1 virtual)<br />system support: win 7 / win8 / win8.1 / win 10 / xp<br /><br />general function<br />1. omnidirectional microphone<br />2. lightweight design<br />3. breathable earmuffs<br />4.40mm drive<br />5. cool led lights<br />6.3d surround sound effect<br />7. super bass<br />8. volume control<br /><br />satisfactory service: we are committed to providing customers with reliable quality products and the best user experience. if you have any questions about our products, please feel free to contact us, we will solve your problem within 24 hours.