?Prevent Earwax Accumulation?: The ear hearing aid filters phonak has Nano-coating protection, has an ideal repellent effect on earwax and sweat. Ear wax filter can prevent earwax from accumulating on the sound port of the receiver and improve the durability and reliability of the hearing aid. ?Easy to Operate?: Easy to use dispenser wheel, the ear wax protector disc will gently rotate when the finger is gently placed on the arrow on the wheel, easy to use for the elderly or other groups. ?Compact & Portable?: The boots hearing aid accessories is light weight and small size, easy to store and carry, can easily fit in a bag, perfect for travel, family gatherings, outdoor activities, etc. ?High-Quality Material?: The baffle of the hearing aid earwax filter is made of high-quality ABS material, which is safe and environmentally friendly, wear-resistant and stable, sturdy and durable. ?Package Content?: You will get 1 pieces of hearing aid filters for Phonak, they are in a roulette storage box. For best results, we recommend changing the hearing aid accessories once a month and cleaning your hearing aid regularly.