Professional entry-level wireless headset is compatible with all leading desk phone systems. Frees users from their desks, letting them walk and talk up to 325 feet away, while simple, intuitive call-control buttons on headset make it easy to manage calls while away from one\'s desk. Headset offers crystal clear audio while SafeTone feature protects hearing by cutting off loud noises and securing safe average sound levels. Noise canceling microphone eliminates unwanted background noise. Talk up to eight hours on a charge without having to recharge battery during working hours.