Personal GPS tracker with GPRS data transfer

Personal GPS Tracker GPS personal trackingproduct is based on GSM / GPS network and GPS satellite positioning system, or through inter-linked short of long-term goal of positioning or monitoring Features: SiRF Star III and Tri-band (or Quad-band optional) Track by SMS/GPRS Track on Demand Track by Time Interval Track by Mobile Phone SOS Alarm Listen-in (Voice Monitoring) Inbuilt Motion Sensor Geo-fence Alarm GPS Blind Area Alarm Low Battery Alarm Speeding Alarm One Button for Phone Calls and Sending SMS BL-5C Battery Built-in 2M Flash Memory, Data Logger Function How it works: Usage: 1. protect child, the old, the disabled, pet etc2. Provide peace-of-mind businessmen3, Manage personnel4. Track criminals secretly