EXCELLENT PRODUCT
The BEST Loud phone ringer that I have found.  If you are extremely hard of hearing this product will work for you.  There are a lot of so-called loud ringers out there, But this is one that is truly LOUD!!!!  Small, compact and Extremely loud with different tones for different types of hearing loss.  I am extremely hard of hearing and The Serene RingMaster Cell Telephone Ringer and Flasher is the best that I have found.  You will not be disappointed.  David Gaines
Rating: 5 stars