Motion 13 7Nx is a Behind The Ear digital hearing aid by Signia Siemens. Motion 13 7Nx has 48 Channel digital processing with 13 no replaceable battery.. It covers Mild high frequency hearing loss to Severe hearing loss. MPO (dBSPL) upto 134. Fitting range upto 100dB. Motion 13 7Nx features includes : Own Voice Processing (OVP), Revolutionary Dual Processing, Ultra HD e2e Binaural Link, Made for iPhone, Direct Streaming from iPhone select iOS devices, 3D Classifier, Extended Dynamic Range, Extended Bandwidth (12KHz), Narrow Directionality, Spatial Speech Focus, EchoShield, HD Music, Twin Phone, eWindScreen Binaural, Sound Smoothing, Adaptive Streaming Volume, Advance Feedback Cancellation, Tinnitus Noiser, Spatial Configurator, IP68 Rating.