Hearing Aid Voice Sound Amplifier Adjustable Volume Product Information Pocket design: The hearing aid kit can easily fit into your pocket. Comfortable wearing: Soft ear buds won't hurt your ears,offering the most comfortable wearing experience. Sound and voice amplifier: Designed by expert audiologists with professional sound noise reduction process,this ear aid can help the user hear the outside sound more clearly and loudly.Help the user rediscover the pleasure of listening to nature's sounds or talking to others. Wide usages.For hard-of-hearing users,the deaf,the elderly,the hearing-impaired,etc. Specifications Package include: 1pc*Hearing Aid Note: Due to different personal measurement methods,there will be an error of 2-4 cm,please understand Thanks for your support