Recently bough for my grandma who is 90 years of age and had a fall previously.
Then pendant can be worn like a watch or on a code around the neck (cord is a safety one) and doesnt seem too bulky and its waterproof.
Setting it up to work with the pendent was really easy, far easier than I thought it would be. It is also easy to change the numbers should you wish.
The phone has 3 large red buttons M1, M2 and M3. You programme the 3 numbers into these keys.
If the pendent is held (must hold, not press, saves acidently pressing) then the phone bleeps VERY LOUD and then starts to make the call on the loud speak, which is louder than the loud speaker part. Im not sure if you can get it this loud on a normal loudspeaker call.
The call is then made... The person who answers has to press 0 to acknowledge the call has been answered, you can also speak through the loud speaker system should you be close enough. The person who answers can also talk back through the loud speaker also.
It also has a speaking phone book too, meaning that my grandma can press the phone book and press up or down and it goes through the names, speaking them. The display is quite large but with this feature she dosent need to see the display.
There is many other features too, but we havent used those as we wanted mainly for the pendant feature!