After sight-assisted set-up, a breeze!
With your phone plugged into this product, you pick up the receiver and a female voice says "Name to dial please", and the user states the name that he or she has already recorded - preferably EXACTLY as recorded or it may choose wrong entry. The device responds by stating who it's dialing, at which point you allow it to continue if correct or disconnect and start over if by chance it offers the wrong selection.  This is RARE.  We are so grateful for this device which of 6 voice-activated cell phones and numerous other voice-activated devices we have tried, this is the ONLY one that consistently responds to and correctly interprets my mother's voice.  Further, it has worked flawlessly for several consecutive years.  Note that this model only responds to names, while others in the line will respond to spoken numbers as well.<br /><br />Note this:  If someone does not want to use the device to make a call, after the "Name to dial, please", simply press any number key to get to a dial tone and dial as normal.<br /><br />The device is voice-specific: The intended user must speak the names to be recorded, and someone must then enter the phone numbers, including the "1" and area code for long distance.  For this reason I think it would be difficult for a visually impaired person to do the initial phone set up.<br /><br />It is essentially a small "brick" to which you attach your own phone that holds roughly 40 voice-recorded names and manually entered phone numbers.  Longer names and numbers take more memory, so if you have several long entries, you may not be able to store as many.  A great device - has been reliable and worked without flaw at least 5 years for us.<br /><br />Update 1/19/13: Almost immediately after writing this glowing review, we began to have difficulties with this older unit, but it served so well for so long, ordered a new one, the Vocally Freedom.  After doing an "erase all" on the older unit, we have re-entered some of the names and numbers and use in on a separate phone in the house - and it is working fine.  The new unit works fine, but periodically announces "Name to dial please" or "Freedom Mode" during calls in a quiet, muffled background kind of voice. Still satisfied but could do without the announcements.
Rating: 4 stars