????-1. Accurate design, high-quality plastic, integrated headband structure, and flexible metal microphone bracket make the microphone of this one-ear USB headset more durable and sturdy. ????-2. The ultra-lightweight USB earphones with adjustable headband to suit all head sizes. The flexible microphone bracket can meet your preferences. The soft and high-quality ear pads can be worn throughout the day for highly comfort. ????-3. With commercial grade broadband USB headphones, digital signal processing (DSP) and noise-canceling microphones, the headset can provide clear calls and acoustic impact protection (ASP) to protect your hearing. ????-4. With easy access volume and mute controls in the power cord, you can quickly adjust the volume of the headset up or down, mute or unmute the microphone or speaker. ????-5. Directly connect the headset to a USB compatible device without driver. The headset is suitable for computers, laptops, PCs, for Macs, for Microsoft Lync, for Cisco and most leading UC platforms.