POLY BLACKWIRE 3210 MONO USB-C HS +USB-C/A

Connect to your PC/Mac with USB-C or via USB-A with the included USB-C to USB-A adapter, Dynamic EQ optimizes the quality of your voice on calls, and automatically adjusts the settings when you want high-quality sound for listening to music,Easily manage calls with inline controls letting you answer/end, mute, and control the volume, Ideal for managing calls on your PC, mobile phone, or tablet combined with the comfort and durability of a corded headset for greater flexibility.