What feature does the USB Headset include for adjusting audio levels?

The feature that allows for adjusting audio levels in a USB headset is volume control with mute capability. This functionality is essential for users who need to manage their audio experience actively, enabling them to easily increase or decrease the sound output or quickly mute the audio when necessary. Such a control mechanism provides flexibility in usage scenarios, whether in professional settings for conference calls or casual environments for gaming and listening to music.

While built-in microphones enhance communication, they do not directly relate to audio level adjustment. Noise-cancellation technology improves sound quality by minimizing background noise but does not facilitate volume control. Wireless connectivity allows for freedom of movement without cords, but it also does not pertain to adjusting audio levels. Hence, the volume control feature stands out as the key element related to managing the headset's audio output.