CallTou Hearing Aids, Rechargeable Hearing Aids for Seniors with Noise Cancelling Invisible OTC Hearing Amplifier for Adults Hearing Loss Device with LED Power Display Black elderly button emergency Easy To Install and Use:Use

Easy To Install and Use:Use the double-sided tape or the screws (included) to mount the doorbell push button

【Applicable Scenes Crowd】 Ideal for teachers

good notification for the elderly with hard of hearing or when in mute mode

But don't forget to open them

CallTou Hearing Aids, Rechargeable Hearing Aids for Seniors with Noise Cancelling Invisible OTC Hearing Amplifier for Adults Hearing Loss Device with LED Power Display Black elderly button emergency Easy To Install and Use:UseProduct Description Rechargeable Hearing Aids for Adults Monitor your battery level with the built in power LED display on the charging case. Fully charged within 2 3 hours, the hearing aids can be used for more than 30 hours. When you put it back the charging case, there will be 150 hours back up power. The hearing aid devices can be charged wirelessly when in the magnetic charging dock. Smart Hearing AidesThis Digital hearing Aids with advanced chip