Sanpyl Telephone Headset with Microphone Noise Canceling, Wired Binaural Headsets with 2.5mm Plug and Volume Control, Corded Headphones with Mic for Call Center, Business

Specification: Item Type: 2.5mm Business Headset Material: ABS Model: H390D-2.5VA Colour: Black Type: Binaural Plug: 2.5mm Plug Function: Call, Speaker Volume Adjustment  Applicable Scope: Compatible with devices with 2.5mm headphone plug Speaker Parameters: Sensitivity: 105±3dB (at 178mV 1KHz) Voice Coil Impedance: 150±15? (at 1KHZ) Frequency: 100Hz-10KHz Distortion: ?5% (at 178mV 1KHZ) Microphone Parameters: Directivity: Unidirectional Sensitivity: -40±2dB (2.0V, 2.2K?, 1KHz) Distortion: ?5% (at 4.5V 2.2K? 1KHZ) Frequency: 200Hz-6KHz Current Consumption: 100-500?A Package List: 1 x 2.5mm Business Headset