This paragraph elderly call device, elderly due to age compared big, action not convenient, encountered burst emergency needs was help Shi, may playing a phone or oral call are can't for, as following situation; heart, hypertension, myocardial infarction, stroke, burst fire, thieves broke into, this when if has a carry-on equipped with a call device, on can get timely of rescue, a gently of button, a sound crisp of call, SOS come and to.