1、Clear Sound Quality: Computer earphones with noise cancelling microphones provide you with clear sound quality on the side. Digital Signal processing (DSP) and noise canceling microphones enable clear conversation, and acoustic shock protection (ASP) protects your hearing. Suitable for online courses, Skype chats, call centers, conference calls, webinars, etc. 2、All Day Comfort: USB earphone with microphone provides super light fit for customer service representatives; Comfortable to wear throughout the day, especially for telephone intensive users, including formal account attendants, help desks, telemarketing and customer service organizations. Its excellent sound quality brings users a good experience. 3、Wide Compatibility: USB and 3.5mm connection options allow you to apply to a variety of devices; Compatible with for Windows 2000, for Windows 7, for Windows 8, for Windows 10, for Windows XP, for Windows Vista, for iOS, for Android, tablet; Note: If you want the mute function, select USB connection 4、High Quality Microphone: Built in microphone can make your voice loud and clear, active noise reduction, antistatic, highly sensitive, flexible microphone bar to ensure the accurate speaking position of each word. It provides high quality communication and is durable. Note: please point the microphone towards your mouth for best results. 5、Superior Performance: It is a simple connection that can only connect to USB + 3.5mm port, the headphone cable is 1.4m/4.6ft long, the conversion cable is 1.7m/5.6ft long and the total length is 3.1m/10.2ft. Microphone mute + speaker mute + volume adjustment easy to use button. It supports Internet calls such as for Skype.