Prompt s is a BTE type digital hearing aid. Manufactured by Siemens brand Signia. Suitable for Mild to Moderately Severe flat, sloping and reverse sloping hearing loss. Open fit hearing option with Life tube fitting and Classic close fit hearing fitting with Ear hook. Fitting Range upto 80dBHL. Maximum Gain upto 55dB. Output upto 124dBSPL. Battery Size 312. Power Consumption 0.9mA. Total 8 Channels and 4 compression control. 4 separate hearing Programs. Standard Pushbutton. Battery door On/Off function.