- H340 USB Headset is the perfect everyday headset with a simple plug-and-play USB-A connection. A noise-canceling microphone reduces background noise and delivers clear digital audio for VOIP and Skype calls. VERSATILE DIGITAL AUDIO FOR EVERYDAY TASKS - The perfect everyday headset with a simple plug-and-play USB-A connection. A noise-canceling microphone reduces background noise and delivers clear digital audio for VOIP and Skype calls. USB COMPUTER HEADSET - The perfect headset for voice calls, Skype, webinars and more. The 180 cm cable is just the right length to give you the freedom to stand up and stretch during long conversations. DIGITAL STEREO SOUND - Enjoy crystal clear audio for music, games and calls. This plug-and-play headset can be used with any PC or Mac computer with a USB-A port or adapter without the need to install software. NOISE CANCELING MIC - Right-sided mic can be positioned for better voice capture and background noise reduction. Discreet boom can be tucked inside the headband and out of the way when you’re not using it. ADJUSTABLE HEADBAND - Lightweight headband with swivel-mounted foam ear cushions provide hours of audio comfort. USB-A CONNECTION - USB provides easy plug-and-play operation. Simply plug the USB-A connector into your computer and you’re ready to talk, listen to music or play games. Specifications - Microphone Type: Bi-directional - Input Impedance: 22 Ohms - Sensitivity (headphone): 115 dB +/-3 dB - Sensitivity (microphone): -42 dBV/Pa +/- 3 dB - Frequency response (Headset): 20 Hz - 20 kHz - Frequency response (Microphone): 100 Hz - 16 KHz