Enhanced audio, there is an enhanced digital signal sound card in the control box, computer headset provides clear, natural and rich audio; whether you are making a video call in a busy work area or listening to music, you can hear clearly. Noise reduction microphone, adjustable boom microphone can minimize unnecessary background noise, such as keyboard clicks, nearby callers can achieve clear and natural calls on most leading platforms, including MS Team, Skype, zoom, etc. Simple and design, suitable for all-day use, long-term conference calls and multimedia listening. Intuitive inline control, keep focused conversation through simple call control buttons; adjust the volume to easily mute the microphone and speaker; the indicator light lets you know whether it is . Extensive compatibility, using a 3.5 mm interface to directly plug into a smart phone or tablet. The detachable USB inline control allows you to easily mute, mute and control the volume of PC/ calls. colour: black Material: plastic Package Contents: 4 x Headset with Microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.