1.Listen to The World Clearly: The hearing aid uses advanced digital chips to effectively control the internal noise within 12dB and the equivalent input noise within 25dB. Intelligent noise reduction allows you to hear important sounds while filtering out some unimportant noise. 2.Fashionable Appearance, Thoughtful Design: The BTE (behindtheear) design makes the hearing aids for seniors look more fashionable. The earphonelike appearance prevents others from thinking it is a hearing aid, eliminating unnecessary embarrassment. The button design prevents it from being accidentally touched, which is very friendly to the elderly. 3.Simple Operation, : Our hearing aid uses a onetouch design. Just take them out of the charging box/put them in to automatically turn them on/off. The 4 levels of volume with a maximum gain of 40dB, which can be adjusted according to your needs. At the same time, we also have a memory mode to save the last volume used for you, so you don't need to adjust it frequently. 4.No Howling: Have you ever experienced unbearable Howling in your ears when wearing hearing aids? Our hearing aids have been rigorously tested to achieve 0 Howling, which is very suitable for people who need to wear them for a long time.