Jabra Evolve 20 UC Stereo Wired Headset has crystal-clear calls: wideband audio and noise-cancelling microphone ensure your voice is heard clearly, even in noisy environments. Easy to use: plug and play connectivity with no need for software or drivers. Comfortable fit: lightweight design with adjustable headband and leatherette or foam ear cushions for all-day comfort. Durable construction: built to withstand daily use in the office or on the go. Passive noise isolation: the on-ear design helps block out some ambient noise.