KENSINGTON HiFi USB Headphones with Mic 80004518 K33065WW Product Description: Kensington USB Hi-Fi Headphones - headphones with mic Product Type: Headphones - wired - USB Compatibility: Chrome OS, Mac, Windows Headphones Form Factor: On-ear Connectivity Technology: Wired Sound Output Mode: Stereo Audio Specifications: Sensitivity 94 dB Microphone: Boom Microphone Noise Cancelling: Yes Controls: Mute, volume Manufacturer Warranty: 1-year warranty