. The Jabra BIZ 2400 series brings a number of ground-breaking innovations which have raised the bar of sound quality comfort & durability in professional headsets. This series has been designed by Jabra to meet the specific requirements of call centre workers & professionals who work in busy office environments & need perfect audio quality in all their communications. Jabra has used state of the art technology in this series with neodymium speakers which provide the frequency range of desk top telephones for exceptionally clear conversations. Jabras Pure Voice technology filters out the irritating background noise of offices so when you are on the phone the person you are talking to will hear you perfectly. This headset is available in different configurations depending on your needs & you can choose between a standard omnidirectional microphone (recommended for quieter offices) or the noise-cancelling version (recommended for busier environments). Durability These headsets are built to last using materials that provide maximum durability at a minimum cost with surgical steel details Kevlar-reinforced cables a break-proof 360º microphone boom arm & strain relief that is 300% more resistant than other headsets on the market. This model of the Jabra BIZ2400 comes with a headband & two speakers which is the ideal style for you if you work in a noisy environment & have to focus all of your attention on your calls. The headband comes with flexifit & a t-bar that prevents it from getting tangled up in long hair. This Jabra BIZ2400 model is exclusively designed for traditional desk phones..