This tone hook fits the following Resound BTE hearing aids : – KEY 2 298 – KEY 3 398 – KEY 4 498 What’s in the package? 1 X New ear hook / tone hook Shipping: -We usually ship within 2 business days with tracking number after payment cleared.-We will only ship to the address provided during payment.-Estimated Delivery Time express : 3-8 business days standard(ePacked) : 7-15 business days economy : 12-25 business days-If you need express shipping, please contact us. Payment:We only accept PAYPAL „According to the FDA, it is in your best health interest to obtain a professional medical evaluation before purchasing a hearing aid and you are encouraged to do so before bidding on this item. If you choose to not obtain a medical evaluation before purchasing this item, I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation, and I am required to provide to you a copy of the User Instruction Brochure for a hearing aid, review the contents of that brochure with you, and afford you time to read the brochure. You must provide to me either a signed statement from a physician or a signed waiver before I will deliver this item to you. Upon your request, I will also provide to you a copy of the User Instructional Brochure for the hearing aid or the name and address of the manufacturer or distributor from whom a User Instructional Brochure for the hearing aid can be obtained. „