The oscillation SM 910 screening audiometer is ideal for use in general practice. Thanks to the Peltor headset with acoustic hoods insists there is little ambient noise through. The audiometer comes with a power adapter and patient response button. Technical data : 11 frequencies from 125 Hz to 8000 Hz Intensity of -10dB to 90dB in steps of 5dB Dimensions (WxDxH) 225 x 180 x 55mm Meets EN60645-1 standard weight 650g. (Loose audiometer) Accessories included Peltor headset, patient response button, AC adapter