The hearing aids are from the well-known brand Phonak (20 audio channels). Phonak Virto B90, which is the highest channel count produced by Phonak. Its model and all specifications are shown in the pictures below the screen with the serial number registered on it and in the Phonak diagnostic device. They are of American use, and their agent in Saudi Arabia is Al-Madina for Hearing. There are many videos to learn more about Phonak hearing aids. Please visit me on my WhatsApp. _ The right hearing aid's sound is slightly muffled, but it is working, while the left one works excellently. This clarification is for honesty only, and God knows the intention. _ The hearing aids come with a remote control to fully control the hearing aids, from raising or lowering the volume or selecting the operating program for each listening session. - The hearing aids have a wireless feature that helps coordinate between the right and left hearing aids, understanding speech, and determining the direction of the sound. There are four categories of Phonak hearing aids, as follows: 1- Category (30): This is the lowest category of hearing aids with the fewest programs. It does not meet all hearing loss requirements. It is a waste of money to pay for this category, which has 8 channels. 2- Category (50): This is slightly better than the first category but does not have all the sound features. It has 12 audio channels. 3- Category (70): Advanced, has most sound features but lacks some minor features. It has 16 channels. 4- Category (90): The excellent or very advanced category. This is the highest category in terms of available programs and is considered a revolution in the manufacturing of hearing devices from Phonak. It has 20 audio channels.. Conclusion: Do not buy any hearing aids without knowing their specifications, model number, and the number of channels they contain. +++++ ((There are several ads for medical hearing aids, check my ads)) +++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++ The requested price for the hearing aids is 1600, and this price is considered final and fixed, with no negotiation. Please do not embarrass me.