Feature: This Vinmall hearing aids for senior’s clear sound quality, beautiful appearance, sturdy and durable. With adjustable amplification mode function, the hearing amplifier can amplify speech background without missing any piece of sound, thus bringing you a clear listening experience without causing transmission loss. This hearing aids are unisex design makes them perfect for both men and women. This digital hearing amplifier is the best solution for people with mild to moderate hearing loss. Boasts 3 adjustable amplify modes and an active noise reduction function, amplifies speech while reducing unwanted background noise for a clear hearing experience. Put the hearing aids for seniors to the right position of your ear before turning on it, then long-press the button for 3 seconds to turn it on. After turning the hearing aid on, you can adjust the volume by short pressing the button. There are a total of three volume levels you can choose from. Three "di di di" voice means the biggest volume. Long press the button for 3 seconds to turn off the audiphones. This rechargeable hearing aids with a charging box is charged with a built-in large-capacity battery, which can be charged anytime and anywhere. Put the hearing aids in the charging box. It can be used for not less than 20 hours after charging for 6 hours, and easy to carry into a pocket.