Logitech H650E Wired Headset Stereo with Noise Canceling Microphone business Headband LED no tangle cable Stylish and sophisticated headset for pro-quality audio Tactile and intuitive controls Enterprise-grade audio quality Designed and certified for business Dimensions Height x Width x Depth: 165 mm x 174 mm x 50 mm Weight: 120 g (Stereo) Weight: 93 g (Mono) System Requirements Compatible with Windows Vista® or higher macOS 10.7 or higher Linux® One USB 2.0 port Application Compatibility Certified for Skype for Business, and compatible with most leading services such as Zoom, BlueJeans, Google Hangouts Pro, Cisco, and more.1 Technical Specifications Microphone (Tx) Type: Bi-directional ECM Frequency response: 100 Hz - 10 KHZ Sensitivity: Type: -45 dB +/- 3 dB Distortion: <10% @ 1 kHz, 15 dBPa (MRP) input Operating voltage: 1.4 - 5.0 V DC Speakers (Rx) Frequency response: 50 Hz - 10 kHz (Diffuse field) Sensitivity: 90 dB ±3 dB at 1 KHz, Input 0.56V/10 mm free field Distortion: < 4% @ 1 kHz, 0 dBm0, 1 kHz Compliant to EN60950-1 Package Contents Logitech H650e Headset Carrying bag Quick Start guide and warranty information Warranty Information 2-Year Limited Hardware Warranty Part Number Stereo PN: 981-000545 Mono PN: 981-000544