Item Type: Call Center HeadsetMaterial: ABSAmbient Temperature: -10C~+40CRelative Humidity: 10%~90%Atmospheric Pressure: 86~106KpaAmbient Noise: 60dB(A)Sensitivity: -403dB(0dB=1V Pa, at1KHz)Impedance: 2.2K OhmsDistortion: 5%Sensitivity: 1003dBPackage List1 x Call Center Headset1 x Manual1INTELLIGENT NOISE REDUCTION: The customer service headset uses ENC noise reduction technology to eliminate background noise and make calls clear. 2ROTATING ANGLE: The call centre headset boom can be rotated 180 degree and the microphone can be rotated 330 degree for smoother voice output and clearer calls. 3ADJUSTABLE MICROPHONE POSITION: The customer service headset can be bent inside and out to achieve precise microphone position adjustment. 4ONE BUTTON OPERATION: Customer service headset supports onetouch mute and volume adjustment. Extensive compatibility and sensitive transmission. 5COMFORTABLE TO WEAR: Headphones are made of premium steel headband, which can be adjusted to fit the size of the head and can be extended and retracted at will without scratching the hand. 6WIDE RANGE OF APPLICATIONS: The communication headset is suitable for use in conference offices, customer service, telemarketing, call centres, internet classes etc.