PRODUCT GRADING    Refurbished Pristine &gt; Minor if any signs of use and wear &gt; Refurbished to the highest standards.  Non-Retail Box     WHAT IS IN THE BOX    Poly Blackwire 3320 Headset BINAURAL 3.5MM, USB-A Corded by Plantronics - Black  PRODUCT DESCRIPTION Blackwire 3300 Series provide a best-in-class audio experience in a headset built for enterprise deployment. Even better, workers want to wear it-so your investment pays off. The great appeal of the Blackwire 3300 Series is apparent at first sight: It has a modern, stylish design. Its microphone boom is flexible so workers can customize the fit. And the headset is fully adjustable with a comfort padded headband, pillow soft ear cushions, and 180-degree pivoting speakers. Not only that, it sounds as good as it looks- with high-quality audio you'd expect from Poly. And if it's starting to sound expensive, we've got good news. Blackwire 3300 Series is priced to fit your budget. PRODUCT INFORMATION  CONNECTS TO - PC via USB/USB-C, connects to mobile devices and tablets via 3.5 mm (BW3315/BW3325) and devices that support USB-A COMPATIBLE WITH - Windows® or Mac OS PC AUDIO RECEIVE FREQUENCY RESPONSE - Dynamic EQ optimized for PC wideband voice telephony up to 6.8 kHz or for multimedia 20 Hz to 20 KHz (Hi-Fi Stereo BW3320/BW3325) SPEAKER SENSITIVITY - 94 dBSPL± 4 dB SPEAKER IMPEDANCE - 32 ohm SPEAKER SENSITIVITY - 94 dBSPL + 4 dB SPEAKER IMPEDANCE - 32 OHM SPEAKER SIZE - 32 mm