Osmile ED1000 GPS Watch has Two-way 4G & 5G phone / video calls functions for communication. Plus, if we download Osmile app after purchasing the watch, we may activate remote photo-taking and listening as well as auto calls to see if our beloved parents or children are safe. Also, there are fall alarm / fall detection functions with one-key SOS button for instant emergency call. Moreover, it has AGPS tracking and positioning as well as geo-fencing functions for anti-lost purpose. Using GPS technology, geo-fencing can alert us if our beloved one with dementia / autism/ intellectual disability leaves the safe zone (boundaries put in place). Same as our beloved kids' safety management. By the way, there are pedometer / HR / pressure / sleep monitoring functions to ensure our beloved ones' basic health situations.