Feature:1. Waterproof and oilproof filter prevents earwax, dust and other foreign matter from clogging the horn.2. Effective extending the service life of the listening device, keep the good and normal condition of the hearing aids horn.3. Hearing aid earwax filter, mainly used for ensuring the cleaning state of your hearing aids horn.4. Compact size, easy and convenient to install into your hearing aids, wonderful accessory.5. Made of quality plastic materials to ensure durability for long periods of use.Specification:Condition: 100% Brand NewItem Type: Hearing Aid FilterMaterial: Plastic Function: Prevent foreign matter such as earwax and dust from blocking the hornUsage: Take out the old filter with screen changerClean the hornTake out one of the filter Use the other end of the screen changer to catch the filter Into the horn mouthGently test your hand to see if it is firm or notNote: If there is screen changer or it has been lost, you can install it by hand. Be careful to avoid falling.Note: 1. Frequently clean filter with a small brush2. Replace filter once every six months to a year according to the earwax3. Make sure that the installation is firm to avoid falling into the ear canal.Package List:1 x Hearing Aid Filter Cover