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The Soundwave Hearing Sontro® Self-Fitting OTC Hearing Aids are intended to amplify sounds for use by individuals 18 years and older with perceived mild to moderate hearing impairment. The device is intended for over-the-counter sale and use without the assistance of a hearing care professional.

Per 21 CFR 874.3325, a self-fitting wireless air-conduction hearing aid is a wearable soundamplifying device intended to compensate for impaired hearing. It incorporates technology, including software, that allows users to program their hearing aids. This technology integrates user input with a self-fitting strategy, enabling users to independently derive and customize their hearing aid fitting and settings. This is an over-the-counter hearing aid. The Soundwave Hearing, Sontro® OTC (over-the-counter) Hearing Aids are self-fitting wireless air conduction hearing aids consisting of the hardware and software: the device uses the otoTune® app and accessories supplied in the carton. Each hearing aid in the pair functions and interacts with the otoTune® app independently and as a system. A disposable size 312 zinc-air battery powers the hearing aids. The hearing aids incorporate microphones for audio input, and sound is delivered to the ear via a receiver in the canal that can be coupled with ear domes. The hearing aids are controlled via onboard button controls and wirelessly via the otoTune® app (iOS and Android). The controls allow the user to configure parameters, settings, and listening modes.