Features: Flexible rotatable microphone can be adjusted to a suitable position at any time. It’s also great for call centers, truckers, and remote employees. This headset provides you a comfortable wearing experience for intensive all day use. The soft cushion ear pad provides a comfortable around ear fit for all day listen. You can adjust the headband to most comfortable size for your head. Prevent the headphone from slipping of your head. Experience clear communication with our noise cancelling headset, featuring for both computers and smartphones. Whether in office, traveling, studying, or simply enjoy entertainment, this headset provides exceptional clarity even in noise environment. Specifications: Component:ABS Type:Roung/Triangular Horn: 150ohm Horn diameter: 30mm Sensitivity: 126dB 1KHz 1mW -34dB 1KHz. Power: 5mW High power: 10mW Bandwidth: 300Hz-6kHz Size:Approx.16x11.50cm/4.53x6inch Package Includes: 1Pc Telephone Headset note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.