This GPS tracker integrates a microphone and a speaker, and can conduct two-way voice calls through the SOS button. Built-in multiple sensors can detect vibration, sound and opening & closing of doors or windows(option), helping users to monitor any illegal and accidental intrusions in real time, and protect individuals or homes in time. The fuselage adopts IP66 waterproof design to ensure that it can be used in rainy weather, outdoor, boat mooring and other environments.