Logitech H390 USB Wired Headset Stereo Headphones with Noise-Cancelling Microphone Features 1. Clear and transparent sound quality and convenient wire control: Experience a clear network call, and a simple and convenient plug-and-play USB-A connection and noise-cancelling microphone. No need to interrupt the call to adjust the volume or mute through the wire control. The laser tuned drive unit can bring enhanced digital sound effects to your favorite music and games. 2. USB computer headset microphone: Ideal headset for applications such as voice calls, Skype, and web conferencing. The length of the 233cm cable is just right, allowing you to stand and stretch freely during long conversations. 3. Digital stereo sound effect: The laser tuned drive unit can provide enhanced digital sound effects, bringing you a new experience of music, games and calls. The headset microphone is plug-and-play and supports for PC and Mac computers with USB-A ports or adapters, without the need to install software. 4. Noise reduction microphone: Greatly reduce background noise and provide clear calling effect. The microphone rod on the left is easy to locate, which provides better sound pickup. When not in use, the microphone boom can be folded. 5. Wire control: The earphone cable has built-in convenient wire control, allowing you to quickly adjust the volume or control the mute function without distractions. 6. Comfortable padded headband and ear muffs: Adjustable headband with replaceable artificial leather ear cushions, comfortable to wear for a long time. It is also easy to clean. 7. USB-A connection: USB supports plug and play, simple and convenient. Just connect the USB-A port to a computer to talk, listen to music or start a game. Specification 1. System requirements: Compatible with mainstream calling applications on multiple platforms and operating systems, for Windows or macOS, Chrome OS 2. Headset type: Wired headset 3. Input impedance: 32 Ohm 4. Sensitivity (headphone): 94dBVPa +- 3 dB 5. S