TK102B 2G GSM GPRS GPS Locator Vehicle Car Mini Realtime Online Tracking Device Locator Tracker for Kids, Cars, Pets, GPS Accuracy: 5-15m 1. Easy to use: all you need is a working SIM card to insert into the unit, charge the battery, and you are ready to go. With GSM connectivity, it works anywhere in the world. 2. Working based on existing GSM GPRS network and GPS satellites. 3. This product is a good tracking, GPS trackers, can be used for vehicle rental or fleet management, or can protect the child the old the disabled pet,etc. It also useful for businessmen, manage personnel, or tracking criminals secretly. 4. Real-time polling auto track voice surveillance Geo-fence SOS single tracking over-speed alarm. 5. Charge time 4-6 hours by wall adapter (not included). 6. Charge time 8-10 hours by computer or notebook. 7. Time to first fix cold status 45s, warm status 35s, hot status 1s. 8. Car charger 12-24V input, 5V output; wall charger 110-220V input, 5V output. Operational guidance: 1. Keep it dry and do not use & store it in dusty places. 2. Do not put it in overheated or over-cooled places. 3. Handle carefully. Do not vibrate or shake it violently. 4. Do not paint & disassemble or refit the unit. 5. Please use the battery and charger provided by manufacturer. 6. Do not dismount the antenna randomly, or use other antennas.