For the best noise-cancelling performance and clear audio quality, place the microphone 1–2 cm from your mouth—about the width of two fingers. If the microphone sits too far from your mouth, it won’t pick up your voice properly, resulting in weak noise reduction, low volume, and poor sound quality Unlike many headsets that press tightly and cause headaches, the AOC ACW2220 headset uses an ergonomically optimized clamping force. The pressure distribution is evenly balanced, preventing discomfort while ensuring the headset stays securely in place all day.