Hearing aid USB rechargeable Sound amplifier designed for the elderly with hearing loss can be tuned to the left and right ears for universal portability single

Pull the "HN" knob to the "N" position, and then slowly adjust the sound knob to a clear sound. If you feel the sound of the "N" position is hollow or noisy, please pull the "NH" knob to the " The "H" file can compress low-frequency sounds, which makes it sound more comfortable. When not in use, turn off the power switch.

Charging method:

1. When the hearing aid becomes weaker or can work normally, the battery power value may be low. Please charge the hearing aid at this time;

2. When charging, plug the standard USB cable into the hearing aid. After plugging it into the socket, the indicator light of the power adapter will be on (this model requires the customer to purchase the adapter);