Function: 1. Waterproof: The hearing amplifier cover is both waterproof and oil-resistant, which can effectively prevent foreign body speakers such as earwax and dust from clogging. 2. Prevent objects from entering: Earwax filters can prevent foreign bodies from entering the hearing amplifier and affecting the normal operation of the hearing amplifier. 3. Extended lifespan: Hearing amplifier can prevent earwax buildup in headphones, prolonging the life of hearing amplifiers. 4. Durability: The hearing amplifier filter is made of wear-resistant materials to ensure long-lasting durability and guaranteed quality. 5. Easy installation: wax cover does not require much effort and time to ensure that the elderly or other groups can operate confidently and quickly. Specification: Item Type: Hearing Amplifier Filter Material: plastic; Function: Prevent the hearing amplifier speaker from being blocked by foreign bodies such as earwax dust. List of packages: 1 x Hearing Amplifier Filter Box 1. Use the mesh lifter to remove the old anti-wax filter, clean the hearing amplifier mouth. 2. Remove one of the wax filters, use the other end of the mesh lifter to stick the wax filter. 3. Load it into your hearing amplifier and gently check if it is hard or not.