Jabra BIZ 1500 Mono QD Monaural Headset (Peakstop technology keeps sound levels safe) 1513-0154The Jabra Biz 1500 is an entry level, professional corded headset designed for comfortable, all day wear. The noise cancelling microphone combined with crystal clear HD voice technology help to provide sound clarity on both sides of the call. PeakStop technology helps to keep loud noises in the safe range for your comfort. The durable, FreeSpin boom arm can rotate up to 360 degrees to find your most comfortable working position. Jabra Biz 1500 Mono