The Blackwire 3300 Series is completely plug-n-play with USB devices, so users can take calls in the office or on the go. Its robust design delivers reliability you can count on. This is the hassle-free headset you've been looking for. Boost your on-the-call confidence with professional-quality audio and a customized fit with a headset that can connect to your devices quickly and easily and is ready to go with you wherever you go. Style, comfort and audio quality. Built for style with a sleek design that focuses on comfort and reliability. Poly signature audio quality so you know you will sound great. And intuitive and simple features so every user can connect to their preferred device simply and easily. Performance. Country of origin. Mexico. Sound pressure level (max). 118 dB. Operating keys. Answer/end call, Mute, Volume +, Volume -. Product colour. Black. Headset type. Monaural. Recommended usage. Business/Everyday. Wearing style. Head-band. Product type. Headset. Ports & interfaces. USB connectivity. Yes. Connectivity technology. Wired. Headphones. Driver unit. 3.2 cm. Headphone sensitivity. 116 dB. Impedance. 32 Ω. Microphone. Microphone direction type. Omnidirectional.