[. . . ] With its figure eight pickup pattern and frequency response optimized for speech pickup, the microphone ensures excellent rejection of ambient noise. [. . . ] Try the earphone on with and without the foam ear cushion to find out which way it fits better and more comfortably. Insert the earphone into your left or right ear such that the microphone arm points toward the corner of your mouth. If you use the headset out of doors slip the supplied windscreen on the microphone in order to prevent unwanted wind noise. To take the weight of the cable off the headset, use the cable clip to attach the cable, e. [. . . ] <2% at 17dBPa, 300 to 3, 400Hz Linearity +/­1dB ­40 to 16dBPa Magnetic stationary field <400A/cm at 2mm from front Warning: Do not exceed 1. [. . . ]