The Black Wire 5210 Monaural Series is easy to use, USB/USB-C and 3.5 mm connectivity options let you work on a variety of devices (smart phone or tablet via 3.5mm). The ergonomically designed, makes it comfortable to wear all day. With noise canceling mic, dual headband sling design, Unified Communications, and customize setting feature. By adding Plantronics Manager Pro, an additional purchase, enables your IT team to gain insight into every Plantronics headset being used company wide. Great dynamic EQ and the ability to connect with both universal USB/USB-C. The lightweight design gives you outstanding audio quality.