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The Eargo Self-Fitting Hearing Aids are intended to amplify and transmit sound to the ear and thereby compensate for perceived mild to moderate hearing impairment in individuals 18 years of age or older. They are adjusted by the user to meet the user's hearing needs. No pre-programming or hearing test is necessary. The product is intended to be used without the assistance of a hearing care professional.

The Eargo Self-Fitting Hearing Aid is a self-fitting air-conduction hearing aid system that incorporates wireless technology in its programming and use. The hearing aid system consists of a pair of earbud-style hearing aids (left and right), a charging case, and a companion mobile application (app) available for iOS (version 12 or later) and Android (version 7 or later) mobile devices. The hearing aids are designed to be virtually invisible, inserted completely and discreetly within the ear canal. Each hearing aid contains a microphone to allow for audio input, which is amplified by the hearing aid. The mobile app facilitates Eargo's proprietary self-fitting process using a combination of proprietary ultrasonic (for fitting) and Bluetooth Low Energy (BLE; for programming fitting settings) wireless communication. The mobile app also allows the user to control the hearing aids using proprietary ultrasonic wireless communication and enables firmware updates to the hearing aid system via BLE. App-based user controls include program and settings changes. In addition, each hearing aid contains an accelerometer sensor that allows for ondevice user control of the hearing aids. On-device user controls allow the user to make program changes without the mobile app. Each hearing aid contains a rechargeable Li-ion battery and is charged by the charging case that also functions as a carrying case. The charging case contains a single-cell Li-ion rechargeable battery, which charges the hearing aids via wireless (near-field inductive) charging when the hearing aids are correctly placed into the charging case.