Our GPS Personal Tracker is fashion looking, slim and light, making it perfect for keeping your loved ones under protection. It is the best choice for you to protect your loved ones when you are not there. Main functions: 1. Two-way Communication Tracking is no longer passive. The tracker supports two-way communication with pre-set family numbers and numbers from the white list, which makes it convenient for family numbers to communicate with anyone carrying it. 2. Geo-fence Alarm A geo-fence can be set by SMS command to provide a safety net for your loved ones. When anyone carrying the tracker walks in/out of the fence, SOS numbers will receive alarm. 3. SOS Alarm There will be SOS button for emergency SOS alarm. Anyone carrying the tracker can long press the SOS button to activate SOS alarm. SOS alarm and location will be sent to pre-set SOS numbers.