Siemens new Lotus Fast P is a 4 channels B.T.E type volume controlled digital hearing aid. Fitting via the rocker switch. 3 pre-configured sound profiles 1 Trimmer. For Moderate to Severe Flat, Slight Slope and Sloping hearing loss. On and Off done through Battery Door, the optimal sound profile can easily seleced and adjusted via the rocker switch. Gain 62dBm Output 130dB. Noise reduction always on. Get other details at akshar speech and hearing clinic in rajkot. For more info visit us at http://hearingaidrajkot.com/Siemens-new-Lotus-Fast-P-is-a-4-channels-B-T-E-type-volume-controlled-digital-hearing-aid-Fitting-via-the-rocker-switch-/b753