Hearing protection Rechargeable Hearing Amplifier for seniors and adults without squeal and also can greatly reduce howling. Protect your ears as much as possible Comfortable to wear Small weight makes your ears no sense of load. Even you worn for a long time, you will never feel pain. It fits your ears very well. You can do anything as you like and don't worry they will fall out of your ears 【Nano Rechargeable Hearing Aids and Small design】 : Different from traditional head-worn and ear-mounted hearing aids, our hearing amplifier is very compact and lightweight, nearly invisible, making it convenient for you to attend various occasions. 【Portable Charging Case】The charging case has a built-in high-capacity battery for longer life and can be charged anywhere, anytime. Put the hearing amplifier into the charging case, the quick charge supports 30 minutes of charging and can be used for 6 hours. It can be used for a whole day after 2-3 hours of charging. Easy to carry, you can put it in your pocket. 【Super Easy to Use】 : Firstly, choose the right domes and wear the hearing aids, then turn on the hearing aids and adjust the volume button according to your needs, these small devices will bring you back in the clear world. Our hearing aid is ideal for mild and moderate hearing loss impairment. But this hearing aid is not for severe hearing impairment. Whistling is normal, please choose the right dome according to the size of your ear canal, inappropriate domes are the main cause of whistling. 【Comfortable to wear】 : Hearing aids for Senior are designed with earphone type, the size is light and small can be well hidden in the ear. No need to worry about the embarrassment when wearing hearing aids. The ergonomic design maximizes comfort, fit and stability for all-day wear. Whether you're running or jumping, the hearing amplifier stays firmly in your ear. 【A Variety Of Accessories 】- This machine is equipped with 3 different sizes of earplugs, 3 each. Choose the earplugs that suit you. 1 cleaning brush, 1 wax guard and tool, 1 Charging box, 1 USB charging cable.