Features: 28mm driver units of the earphone deliver clear balanced sound quality. Quality flexible mic has good noise reduction function and makes your voice can be clearly heard. Easily volume up/down or mute/unmute mic with wired control. Soft leather ear cushions rest comfortably on your ears. Ergonomic stretchy head beam to suit different head sizes. Universal USB plug, widely compatible with laptop, desktop, corded telephone etc. Specification: Item Name: On Ear Headphone Plug Type: USB Speaker Impedance: 32 Ohm Driver Unit Diameter: 28mm Mic Directivity: Omnidirectional Mic Impedance: 150 Ohm Mic Sensitivity: 47±3dB Material: ABS Cable Length: 2m Note: Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. Thank you for your understanding, nice day! Package Includes: 1 x Headphone1 x Headphone