Features - GPS+WIFI positioning Allow the location to be pinpointed in real time or periodically - IPX5 waterproof Water-resistant case to ensure stable operation in tough environment - Geo-fence alarm Create geofences in circle or rectangle for key locations - Voice monitoring It enables you to listen to the surroundings SOS call Thumb sized button allowing urgent call during an emergency case - Low battery alarm A warning will sent by Email or SMS when low battery occurs - Two-way communication With MIC and speaker, it realizes two-way communication - Compact size Easy to carry and able to place it in various locations