Corded headset Great for stationary work USB-A/USB-C connectivity Connect to 1 device Enhanced durability 2 year warranty Passive Noise-Cancellation 3-microphone call technology On-ear wearing style Plug-&-play Engineered to keep you on task. Exceptional audio, outstanding noise isolation, superior comfort.Quiet delivered to your desk.Put on your Evolve2 40 and feel the noise around you instantly fade, as the isolating foam oval ear cushions and pioneering new angled earcup design work to effectively block out your surroundings, giving you outstanding passive noise cancellation.Instant quiet without leaving your desk. Thats the new standard.Dont hide when youre in your stride.Weve taken our busylight to a whole new level, making it visible from any direction. The red light is automatically activated when youre on a call or in a meeting, or you can activate it yourself at the touch of a button. So, even when youre right in the middle of everything, your busylight will protect you