About this item
Installation Instructions: There are three sizes of earplugs in the box, you can choose the most suitable one for yourself. Then put the earplug on the horn of the hearing amplifier. Two 1.45V zinc-air batteries are included. One battery can be used for more than 16 hours. It is easy to replace after you open the battery cover
Using Guide: Turn off the ear sound enhancer and adjust the volume to the lowest position before put the device to your ear. Then put the hearing enhancer to your ear tigthly and slowly adjust the volume until you hear the clearest sound.This product can't be used at excessive volume for a long time life in order to prevent the damage to hearing
Storage and Protection: After taking off the hearing amplifier, it should be stored in dry environment and stay away from high temperature and humidity. Please also avoid falling, hitting and high pressure
Notice: It is normal to feel uncomfortable when you first use it. Just follow the instruction and get used to it step by step. It will help you a lot in your daily life