GSM GPRS GPS Emergency Senior Fall Alarm SOS Button V28 Real-Time Tracking Two Way Talking Geo-Fence Elderly Care

ATTENTION: This device only support 2G SIM card, so only support GSM network, don't support 3G,4G SIM card. Before you place an order, please make sure the telecom company of your country support 2G SIM card and 2g network. If you from USA, Australia, New Zealand, Spain, please don't buy this product, because it can't use in your country !!! Elderly SOS Button V28 Main Features: Real-time tracking Historical route playback Geo-fence SOS alarm & push-button calling Talking clock Fall alarm Vibrate on Ring for incoming call remind Two way audio communication Mute automatic answering calls for voice monitor Low battery & SIM card change reminders Product Specifications: 2G GSM:850/900/1800/1900MHz GPRS Standard: Class 12, TCP/IP GPS locating time: 60sec with cold boot (open sky) 29sec with warm boot (open sky) 5sec with hot boot (open sky) GPS positioning accuracy: 10-15m (open sky) WiFi positioning accuracy: 15-100m (wifi area) LBS positioning accuracy: 100-1000m Working temperature: -18℃ ~ +45℃ Working humidity: 5% ~ 95% RH Device host size: 40.5*43.3*13.8mm Device host net weight:25g Battery capacity: 400mA