Features: brand new and high quality It provides 3.5 mm stereo and is approx 90mm/3.54 inch. Black steel flexible hose, bendable and removable foam cover. This headset with advanced noise cancellation technology brings superior audio enhancements and noise suppression to the near and far end, this delivers the best possible call quality. There are many mini holes on the surface of the earmuff for breathing, you can wear it in summer without the sweat. It is comfortable enough on your calls and good for car, conference meeting, teaching, training, online live broadcast, tourist and others. Please adjust your computer or cell phone's volume when you still can'for t hear clearly even you've reached the highest volume on our cell phone headsets. Specifications: Size: Approx 90mm/3.54 inch Material: Metal Package Includes: 1x Headphone Microphone note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.