GOTD USB 2.0 Mini Microphone MIC for MSN PC Mac Notebook Laptop, Audio Receiver Adapter, Driver-free, plug and play, Potable for Home and Office (Black) Materials:Plastic. Smallest USB Microphone in the world! 8'shielded cord with USB connector. Size: 0.79inch x 0.79inch x 0.20inch. Advanced digital USB provides superior clarity with the simplicity of a single USB plug-&-play connection. Power switch illuminates when microphone is active. Sensitivity:-67 dBV/pBar.-47 dBV/Pascal+/-4dB