Siemens Signia Fun SP Hearing AidSiemens new Lotus Fun SP is a 6 channels B.T.E type volume controlled digital hearing aid. Fitting via the rocker switch. 4 preconfigured sound profiles 1 Touch. For Moderate to Severe Flat, Slight Slope and Sloping hearing loss. On and Off done through Battery Door, the optimal sound profile can easily selected and adjusted via the rocker switch. Gain 79dB Output 139dB. Noise reduction always on. Its other features includes :-Microphone -Picks up sound and impro..