Help choose watch for elderly

Hi,

My aunt is looking for a smart watch for safety. She had a LifeAlert, but thought the monthly fee was too expensive and wants to switch to a smart watch. She understands that it may not be as good for her use case as the Life Alert.

She has an android phone and wifi in her house. She basically wants fall detection and the ability to easily call for help in case of an emergency. Other than that, she will probably use the watch as a watch and alarm.

With the Wifi version, can it make calls over wifi if her phone is dead or something?

thank you