Panasonic KX-TGM450S Cordless Phone with (1) KX-TGMA45S Handset - 50dB Volume Booster, Slow Talk Control, Noise Reduction, Caller ID - Ideal for Seniors & Hearing Impaired - Perfect for Home & Office Use

We bought these for my husband, who has moderate hearing loss and wears hearing aids. We debated between this model, which has a sound boost that goes up to 50 decibels, and the model just below it, which has a sound boost that goes up to 40 decibels. We finally decided on this model, even though it is more expensive and only includes two phones, rather than the 40 decibel model which is cheaper and includes three phones.I have to tell you, the volume on this phone is loud! My husband doesn't even have to use the Boost feature, and the volume of the person's voice whom he is speaking to is still loud enough for him. I believe that the normal volume for the voice on this phone is at 15 decibels, and pushing the Boost button just once bumps that level up to 33 decibels, which is quite loud. I can't even imagine bumping the Boost all the way up to the maximum 50 decibels! Unless you are practically deaf, that level could really hurt your hearing.Aside from the Boost feature, this phone also has other great features. One that we really like is Slow Talk feature. You can push it while listening to a call being screened or to a voice mail, and it will slow the voice down to make it more understandable. This is really great when someone is speaking too fast to clearly understand them. It also has a Tone feature, with 6 different levels to help improve the tone (quality) of the voice of the person you are speaking to. There is another feature, that helps to up the volume of your voice to make it louder to the person you are speaking to on the other end. It has a voice that tells who the person is who is calling. You can also set the voice to speak the numbers which you are dialing if you'd like. There are two bright red lights, one on the receiver and one on the base, that flash brightly when you are receiving a call and when you have a message. This is quite helpful when one might not be able to clearly hear the phone ringing, although the ring tone set on its highest level is quite loud in my opinion. We even had to turn that down one notch. There are also other features (like phone book, etc) which we have not tried yet.This phone is really great and worth the price for someone suffering from hearing issues. But I have to say though, that unless you have severe hearing loss or are very elderly with hearing issues, this phone might be way more than what you need. Even though my husband has moderate hearing loss and wears hearing aids, this phone is certainly more than he needs. I wish we would have gotten the 40-decibel model instead. We would have paid less, gotten three phones instead of two, and it would have been more than sufficient to help my husband hear clearly while on the phone.