Unverified80% confidenceTradeoffTime unknown
续航与功能成反比：4G+定位+跌倒检测款续航通常仅2-5天需频繁充电，纯家庭主机响铃款（蓝牙）续航可达数月；健忘老人选后者或选带充电底座提醒的款
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Unverified续航与功能成反比：带4G+GPS+跌倒检测的智能手表型续航通常仅1-3天，需每日充电（老人易忘）；纯4G按键式呼叫器可待机数天至数周。为老人选购时充电便捷性（磁吸/座充）比功能堆砌更重要92% similarUnverified带4G常连网+GPS+持续心率监测的跌倒手环续航通常仅2-4天，纯蓝牙+按需检测型可达7-14天。给记性不好或抗拒充电的老人选购，续航短的4G款反而因频繁没电失去防护意义90% similarUnverified带4G实时定位与自动呼救的设备通常需每天充电或续航仅2-4天，纯手动SOS按键设备可续航数月；追求功能全面就要接受频繁充电，老人易忘充电反成隐患88% similarUnverified4G定位项圈续航普遍仅3-7天且需月付流量费，蓝牙+基站辅助定位款续航可达数月免月费；日常活动监测优先选蓝牙同步款86% similarUnverified开启持续心率监测和4G待机后实际续航会明显缩短，需确认老人或家属能接受每隔几天充电一次的频率85% similar
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