Sanwa Supply USB Headset/Headphones MM-HSU03BK

A single-ear, overhead USB headset suitable for call centers, etc. It's easy to connect, just connect to a USB port. It is lightweight and comfortable to wear, making it ideal for long periods of use. It uses a noise-canceling microphone that is less likely to pick up surrounding noise. Microphone mute and volume adjustment can be easily done with the hand switch. Comes with an answer/end button compatible with Microsoft Lync. [Type]: Dynamic type 40mm (mono) [Frequency range]: 100~5000Hz [Impedance]: 100Ω±15% [Maximum input]: 40mW [Type]: Condenser type [Directivity]: Bidirectional [Frequency range]: 100~8000Hz [Impedance]: 2.2KΩ [Input sensitivity]: -41dB±4dB (0dB=1V/Pa 1KHz) -61dB±4dB (0dB=1V/ubar 1KHz) [Connector shape]: USB A connector (compatible with both USB 2.0 and 1.1) [Size]: W150 x D47 x H150mm [Cable length]: 1.8m ± 0.2m [Weight]: 110g (including cable)