Product Details Logitech H390 Wired Headset, Stereo Headphones with Noise-Cancelling Microphone, USB, In-Line Controls, PC/Mac/Laptop - Black Optimum Comfort: PC headphones with plush, padded headband and earcups Enhanced Audio: Experience premium sound quality; system requirements: Windows Vista, Windows 7, Windows 8, Windows 10 or later, Chrome OS USB port, MAC OS X (10.2.8 or later) USB port Noise-Cancelling Qualities: A rotating microphone that minimizes background noise for clear calls In-Line Controls: Adjust the volume and mute your mic via the headset cable USB Connectivity: Plug-and-play when you are ready with a simple USB connection Upgrade to Logitech H540 headset for high-definition sound and on-ear controls DIMENSIONS Height x Width x Depth: about 200 mm x 245 mm x 72 mm Weight: 0.197 Kg SYSTEM REQUIREMENTS Works with Common calling applications across almost all platforms and operating systems. Windows or macOS Chrome OS™ USB port (Type A port or adapter) TECHNICAL SPECIFICATIONS Input Impedance: 32 Ohms Sensitivity (headphone): 94dBV/Pa +/- 3 dB Sensitivity (microphone): -17 dBV/Pa +/- 4 dB Frequency response (Headset): 20 Hz - 20 kHz Frequency response (Microphone): 100 Hz -10 kHz Cable length: 2.33m Connections: USB-A compatible (1.1, 2.0, 3.0)