The "Linx" brand is what we wear as a hearing aid just like we purchase "LG" appliances. Resound makes a number of different Linx models of hearing aids. I have one of their earlier models - the LinX2 - Surround Sound model with 2.4 GHZ wireless technology (connectivity) Mine are behind the ear 77 uses size 13 batteries. I chose red colored hearing aids so they match my red iPhone. My iPhone's bluetooth enables the wireless communications. There are wireless accessories that are available like I said including: TV Streamer, Mini Microphone and Phone Clip. Talk to your audiologist and they can provide you with all of the information about Resound. AND remember, take one step at a time. Know your own hearing loss, what you expect you may need and what you expect the hearing aid will do for you and then learn how the aids will help you. Then use them by reading everything about them and work with you audiologist to make sure they work full time for you. Always ask questions even if they seem dumb...because these aids are helping you hear better and wiser. You will be helping yourself and others by doing this. Questions...stay on this web blog... Eloise