VOLUME CONTROL AND WARRANTY: There are easy access in-line volume control and microphone mute with the computer headphone. You can quickly adjust the headset volume up/down, mute/un-mute the microphone. We promise 2-year warranty for the conference call headset. In case there is any question or problem using the PC headphone, please send us message. We will reply within 24hs ASAP. GRAET DURABILITY: Light weight and tough designed, superior quality speaker and microphone, reliable plastic parts ensure the computer headset with mic for extended period use. Reinforced cord built with Kevlar to withstand demanding environment and to protect against office chair wheels, sharp objects for daily use. Compete with Plantronic and Jabra USB headset for all day long heavy use. SUPER COMFORTABLE: MAIRDI USB headset with mic features plush soft protein leatherette over ear cushion, adjustable headband to fit for different head sizes, and ear pieces 180 degree rotatable for all day long wearing. Microphone arm 330 degree rotatable allows users to wear the headset with microphone for PC on either left or right side, ergonomically designed for call centers customer service, offices home remote work. PLUG AND PLAY: No drivers needed, just directly connect the computer headset with microphone to a USB compatible devices PC laptop, desktop, Mac, work with Dragon Nuance speaking, Skype chat, Cisco Jabber, Microsoft Teams, Lync, Zoom for softphone voip calls, voice recording, video conference, language learning and music enjoyment. The PC headset with microphone is designed with anti acoustic shock circuit to block out sudden sound for hearing protection. WIDEBAND AUDIO AND MICROPHONE: The USB headset with microphone for PC adopts advanced algothrim noise canceling technology to ensure crystal clear voice for call centers customer service, office telephone calls and home work even in noisy environments. USB PC headset built with powerful 40mm speaker driver and wideband audio solution deliver impressive HD natural clear hearing. TOP END USB CHIP with DSP technology to optimize speaker sound and microphone voice for clear communication.