The Jabra EXTREME2 builds on the great success and technology of its predecessor, the Jabra EXTREME. Noise Blackout 3.0 technology blocks out an astonishing amount of background noise, to ensure you can enjoy your conversations without disruptions. Sound quality is taken even higher with the inclusion of HD Voice technology. This enhancement will allow you to hear the other person's voice with unbelievable clarity, so that you can enjoy extremely clear hands-free conversations - anywhere and anytime. Automatic Volume control instantly adjusts the headset's volume to best suit your environment. These features will retain the natural sound of your voice on every call. Jabra EXTREME2's superb fit also enhances its sound quality. Ultimate Comfort Eargels and a choice of wearing styles means the headset will sit comfortably and securely, keeping you comfortable and at ease whenever you're wearing it.