With the SeTracker App, you can use geo-fence to send an alert to you if your pet leaves a preset safety area. In case of an emergency, press and hold the SOS button to immediately call you and if you dont answer, the pendant tracker will circularly call 3 preset emergency numbers. The GPS and historical route tracks your pets exact location anytime. To save on battery, the power saving mode pauses the tracker if your pet isnt active or resting.