Phonak Receiver – Speaker for Audeo S, Smart, Yes, Naida CRT and other Receiver Size:1R = RIGHT SIDE SIZE 1 NEW 1-pack RECEIVER-SPEAKER by Phonak. Fits RIC (Receiver-In-Canal) hearing aids made by Phonak and Unitron in the last five years including the Audeo, Yes, Naida CRT, and all other Unitron and Phonak RIC hearing aids. These are the traditional straight receivers and not the curved speakers; which are also available. Over time, these receiver/speakers can become impacted with wax and need to be replaced. If you have any doubt, please consult a licensed hearing aid professional as these speakers are not refundable. Thank you for your patronage. Product Details BrandHearing Aid Supply ShopSize#1R = RIGHT SIDE SIZE 1Product TypeHearing Aids Amplifiers And Accessories New Receiver – Speakers for Phonak Hearing Aids.The size is printed on the tiny end; we recommend using a loupe and bright light to determine the correct type and size.Remember that RED is for right and BLUE is for left.Please review the Product Description before ordering, and contact us if you need assistance with ordering the proper size. Check out my other items. -Powered by