Phonak Ok! MOK! are new product lines in the basic segment.It features AudioSetTM, an innovative way of programming that guarantees great hearing performance. AudioSetTM is a rotary switch that allows a unique, straightforward fitting – no computer is necessary.Based on the analysis of more than 15 000 real audiograms, AudioSetTM offers four pre-calculated settings for typical audiogram shapes in each model (M, SP and UP). Moreover, OK! is designed to reduce feedback and noise within each individual AudioSetTM setting.Durable components with the assurance of world-renowned Swiss quality guarantee stable long-term function even under challenging conditions.Every setting of AudioSetTM is a combination of gain, compression and proven Phonak technologies for effective feedback and noise reduction. AudioSetTM is not a trimmer: It is a innovative way of programming digital hearing instruments without a computer yet providing an individual fitting and great hearing performance.OK! M accommodates audiograms with less than 50 dB hearing loss, more severe hearing losses are covered with the settings of OK! SP and OK! UP.Feature and accessories overview:Features : Description:Channels - 1AudioSetTM: The innovation of programming digital hearing instrumentsFeedback reduction: Automatic reduction of feedback Noise reduction: Automatic reduction of non-speech sounds Volume Control: +/- 2 dB steps < Hearing instrument: Beeps Acoustic confirmation of manual actions and end ofbattery lifeRobust housing: Protects the hearing instruments even under harsh conditionsPediatric accessories: Minihook ,Tamperproof battery door. Performance Profile:Maximum Power Output (dB SPL): Maximum Gain (dB) Frequency Range2cc Coupler - 123 2cc Coupler - 52 <100-6200Hz Ear Simulator - 128 Ear Simulator - 60Battery Size 13No delivery to PO box.Product will be sourced from official Phonak distributors and the instrument will come in Original Manufacturer's packaging.Trusted Seller - Buy with complete confidence.Battery will be removed due to strict customs regulations.All the Hearing Aids can be programmed as per your audiology report if requested for no extra cost."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 looking 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."