Unverified92% confidenceDecision RuleTime unknown

GPS定位项圈必须选带独立4G/eSIM的型号才能实现走失后远程实时追踪，纯蓝牙/WiFi型号仅在家附近有效，超出30-100米即失联，不适合防走失需求

1

Sources

92%

Confidence

Long-term

Relevance

-

First Seen

Sources

Related Entities

宠物智能项圈category

Related Claims

UnverifiedGPS追踪器几乎都依赖蜂窝网络（4G/NB-IoT）上传位置，必须绑定流量卡并按月/年付费，无月租的纯蓝牙追踪器有效范围仅30-100米，只能在家或近距离找物83% similar UnverifiedGPS实时定位项圈需内置独立SIM或蜂窝模块并依赖运营商信号，室内和地下室易失效，纯蓝牙/WiFi款仅能在信标附近有效，走失场景不可靠82% similar

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