My apologies if this is the wrong forum. Wasn't quite sure where to ask this.

Does anyone have a recommendation for a medical bracelet, necklace, or something like that designed for elderly people to call for help if they don't have their cell phone?

I have a neighbor who is recently widowed, and I have been assisting her with several things. She is physically able to do everything she wants, but now that she is alone, I'm worried about a fall/injury and she not having her cell phone where she can get to it.

I've Googled it, but the information is a bit overwhelming, so I thought I would ask if anyone had a personal recommendation for something they use for a parent, grandparent, etc...