We live in an area where we can't get most medical alert buttons to work inside our house. So far this one and one other company (which we would never go back too) are the only 2 that work. MobileHelp is a very compact size and very easy to take care of. My wife bought this for me and I didn't like the idea to begin with, after wearing it for a week, I forgot I had it on. The only problem I have is that once in a while the position I have the one piece on my side gets set off by the seat belt in the car. The staff when I've called in with questions or when it accidently goes off are extremely nice and helpful.