About HAVIT The HAVIT group, based in Hong Kong has over 16 years of experience with computer accessories, tablets, and much, much more. Our products are built to the highest quality standards and we stand behind each and every single one of our products with a full 1 year manufacturer"s warranty. [HAVIT® HV-H2111D Foldable DJ Headphones with Microphone for Phone or PC] Easy Comfort Meets Savvy Style Escape into an audio wonderland with help from these supra-aural On-Ear Headphones. Designed with cushioned, pressure-relieving ear pads that rest comfortably on your ears while cancelling out external background noise. Fold-Flat Portable Design Thanks to our unique swivel ear pads, these headphones can lay flat for compact storage in your pocket or bag. They are extremely light weight at just 5.4 ounces Embedded microphone Embedded headphones allows you to make calls, game, or video chat. Standard 3.5 jack can be used with your phone, PC, or any other standard equipment. Technical Specs Speaker diameter 40 mm Impedance：32 Ohm Sensitivity：108dB± 3dB Frequency Response：20Hz - 20KHz Cord Length：Approx.1.2M Plug Type：3.5 mm Full 1 year manufacturer"s warranty All HAVIT products are built to the highest quality standards and we stand behind our products with a full 1 year manufacturer"s warranty.