Upgraded Sound Quality:Our hearing aids are equipped with upgraded sound processors and digital chips that provide clear, natural sound and effectively suppress background noise to ensure a comfortable listening experience. Enjoy advanced technology and easy control with our hearing aids. Intelligent Charging Case:With just 3 hours of charging each time, the hearing aids can be used for 20 hours, which is enough to meet your daily needs.Meanwhile,the charging case can store 100 hours of standby power, which is enough to charge the hearing aids 5 times. Simple Operation:The hearing aids are designed with an automatic switch, picking up the hearing aids and switching them on automatically, avoiding the hassle of wearing hearing aids. Portable charging case design, just put the hearing aid back to the charging case, it can automatically detect and replenish the power. Comfortably Chic Design: Hearing aid combines comfort and style with a sleek, modern look that’s safe for extended wear. It features professional-grade earplugs for enhanced hearing and protection. Soft material won’t cause discomfort when worn for long periods of time. Packing Lists Hearing Aids*2, Charging Box*1 Charging Cable*1 Earplugs*6 Cleaning Brush*2 Screwdriver*1 Manual*1 Why do my hearing aids whistle ? Normally, Wearing our hearing aid in error result in the disturbing whistling or squeaking noise coming from device is caused by called feedback. We recommend that few simple steps as followed to reduce or eliminate noise: The first, Please choose the appropriate ear domes according to the size of the ear canal and Make sure the „ear domes“ fit snugly in your ear . If your hearing aid’s ear domes does not fit in your ear properly, sound will leak out and back into the device’s microphone, causing the whistle sound. The Second, Please clean your device with our brush every time . Our ears produce wax naturally to trap and expel foreign substances, but when you have wax build-up in your ears and insert your hearing aids on top of the wax, the sound coming out of the amplifier will be blocked and returned to the microphone, causing a squeal. The Third, Adjust Volume Settings, Avoid setting the volume too high. High volume settings can sometimes cause echoes, try reducing the volume gradually. The Last , Please store your device in clean Case, If the hearing aid’s microphone is covered with wax or debris, it will make a noise. What to do if your hearing aids don’t charge properly？ 1. Check the hearing aids is correctly putted into the charging case. 2.Make sure the charging case has enough power