Specifications: Simply insert a GSM sim card into the GPS unit. Whenever you call the unit it will respond with the coordinates of its location thru a SMS message. You can then use these coordinates on any mapping software (for example Google Earth) which will show where exactly the unit is located. This Cutting-Edge GPS tracker is designed for advanced tracking/monitoring, especially for vehicle tracking using GPS, GSM and GPRS technology. The GPS tracker is designed for use in any vehicle to track it's location, such as cars, trucks, boats, motor homes, vans and construction machinery and many more - the live tracking possibilities are limitless! This is particularly useful if your vehicle, pets, child or your belongings have been stolen. Time to enjoy the benefits this GPS tracker brings! Applications: This product can locate accurately, provide real time tracking for: Vehicles (Anti-Theft). Protect children, the old, vulnerable loved ones, the disabled, pets, etc. Camping, vacations. Employees, fleet managing. Remotes control vehicles. Criminals. Lost R/C model airplane locator. Features: LIVE! Real-Time tracking! Built-in GPS personal locator. GSM/SMS communication or GPRS TCP/UDP connection. Works worldwide! Supports single location AND continuous tracking. Supports location triggered by tracker. Supports location triggered by authorized cell phone. Supports alarm and remote VOICE MONITORING! Supports quick dialing buttons for 2 preset phone numbers. Supports check location by SMS and Internet. Monitors can track the person without interfering with him/her. Locate the locator holder by the mobile phone via SMS. SOS button sends out exact location for immediate rescue/action. Geo-fencing to restrict tracker movement to a defined radius. No monthly service charges to be paid to the call center. Compact size, easy to carry, hold and hide. Type: GPS Tracker Color: Black GSM Chip: 850/900/1800/1900 Mhz GPS Sensitivity: -159DB GPS Frequency: L1, 1575.42 MHz Accuracy for Location: 5m, 2D RMS Accuracy for Speed: 0.1m/s Time to First Startup: Cold Status 45s, Warm Status 35s, Hot Status 1s Altitude Limit: 18,000 meters (60,000 feet) max Velocity Limit: 515 meters/second (1000 knots) max Vibration Limit: 20m/second Operation Temperature: -20C to +55C Humidity: 5% ~ 95% Non-condensing Car Charging Voltage: 12-24V Input, 5V Output Handheld Charging Voltage: 110220V Input, 5V Output Standby Time: around 150 hours (with Sleep Mode) Battery: Rechargeable and Changeable 3.7V/850mAh Li-ion Battery Charging Port: DC 5V (Mini USB Port) Size(L x W x H): 66mm x 46mm x 17mm/2.60" x 1.81" x 0.67" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x GPS Tracker 1 x 3.7V/850mAh Li-ion Battery 1 x Cable 1 x English User Manual Welcome to our store,wish you enjoy it.