Clearly the best for Vo IP! The clever design of Mod Mic Business makes this an ideal option for office or home calls. Install the Mod Mic Business to your favorite headphones & be amazed at the audio quality in every meeting or interaction. Key Features High-quality noise canceling microphone Included USB (Universal Serial Bus) adapter In-line mute switch for quick silence Easy to attach or remove Specifications Single capsule microphone Jack: 3.5mm plated TRS for use with PCs Cable: 1.5 meters length, 2.5 mm diameter, coaxial shielding, mute button ~150mm from end of boom Boom: 175mm max length, flexible with internal steel spine Clasp: 12.7mm (0.5 inch) diameter circle adhesive pad footprint, ~17.5mm total height of attached clasp assembly Microphone Capsule Specs Pattern: Cardioid uni-directional pattern Sensitivity: -38 ± 3 d B Response: 100 Hz–10 k Hz SNR: >50+ d B Impedance: 2.2 K& Omega; Operating Voltage: 1 to 10V Max current at 2.0V: 500 µA Max input SPL: 110 d B Mod Mic Capsule Chart Whats in the Box One Mod Mic Business attachable boom microphone with inline mute switch One powered USB (Universal Serial Bus) adapter Two base clasps, one top clasp with cap One extra 3M pad for re-attachment of base clasp One foam pop filter Alcohol wipe 5 cable clips (not in pictures) Instruction manual