? Connectivity ? Available in a variety of connectivity and wearability options, variants include USB-A, USB-C and 3.5mm Jack (for Voice 420 model) / USB-A, USB-C (for Voice 320 model) ); easy to use, can be connected to any device with USB-A or USB-C port, Plug-n-Play. Stylish Design ? Leatherette or foam ear cushion, smooth design, flexible microphone shaft and light weight, provide all-day comfort and a customizable fit. The headphones have an 11 ° rotation and the microphone is adjustable up to 315 °, giving you the ability to use it from any side you want. I Remote Inline Control ? Integrated remote inline control with backlit buttons, allows + / - volume control, answer / end calls and mute. ? Ambient Noise Cancellation ? Wideband Audio with Ambient Noise Cancellation (ENC) for clear, high quality PC and phone calls. ? Professional and Office Use ? The VOICE series headsets are designed for professional and office use: call centers, online conferences, ideal for users who use the telephone intensively.