1、Noise Canceling Mic: Phone headset with built in voice noise reduction processor, optimized for voice environment sample rate conversion, equalization, dynamic range control and sound signal processing, ultra clear calls. 2、Ergonomic Design: The boom of the telephone headset can be rotated 180 degrees, the microphone pole can be rotated 330 degrees, so that the voice output is more stable and clearer calls. 3、Bendable Mic: Microphone bar of this phone headphone can be freely bent inside and outside to achieve precise adjustment of the microphone position, which can be positioned to the most comfortable position. 4、Retractable Headband: Single sided headphone with premium manganese steel headband, retractable and adjustable to adapt to different head sizes, not scratching hands. Easy adjustment, reduce head pressure. 5、Flexible Spring Wire: RJ9 phone headset with spring wire design, can be stretched at will to avoid confusion caused by the wire being too long. Suitable for home, office, call center, customer service, etc.