Preston Walker personal FM System

We are trying to raise $4000.00 for Preston a personal Fm system. Preston is 4.5 years old and is deaf. He and his older brother both have usher syndrome. He currently has bilateral cochlear implants. Usher syndrome causes progressive hearing loss and eventual loss of sight. With the FM system the speaker will wear a microphone and their voice will bypass all background noise and go directly to his cochlear implants. The cost may not seem like much, but with having to pay for all the parts that accompany two children with cochlear implants we just do not have it. WE are asking for any help you are willing to donate for our son. Thank you!