Fangrui Product Details 1. 103b Gsm Gprs Gps Vehicle Tracking System, Support Tf Card Memory, Band: 850 900 1800 1900mhz 2. Application: 3. Track Vehicle Or Heavy Equipment 4. Anti-thief For 24 Hours A Day 5. For Help 6. Vehicle Management: Car, Taxi, Truck, Special Vehicles 7. Suitable For Company Or Individual 8. Non-server Or Work With Workstation Server 9. Support Tf Card Memory 10. When The Sim Card Is No Signal, Gps Tracker Will Track Information Recording To Tf Card 11. Main Features: 12. Support Both Gps Gsm Station Positioning Ways. 13. Support Smsgprsinternet Network Data Transmission (gprsinternet Instructions In Cd Enclosed 14. Support Gprs On-line And Gprs Re-connected Automatically If Gprs Drops 15. Support Sms Gprs Dual-mode Switching 16. Support Configuration By Remote Terminal. 17. Support For Point-to-point, Point To Group, Group-to-group Monitoring. 18. Set Multiple Functions Of Security, Positioning, Monitoring Surveillance, Alarms And Tracking In Its Entirety. 19. Specifications: 20. Dim: 83 X 54 X 26mm 21. Weight: 120g 22. Network: Gsmgprs 23. Band: 85090018001900mhz Or 90018001900mhz 24. Gsmgprs Module: Simcom900b 25. Gps Module: Sirf3 Chip 26. Gps Sensitivity: -159dbm 27. Gps Accuracy: 5m 28. Gps Start Time: Cold Status 45s 29. Warm Status: 35s 30. Hot Status: 1s 31. Voltage Of Car Power System: 12 V -24v 32. Backup Battery: Chargeable Changeable 3.7v 800mah Li-ion Battery 33. Storage Temp: -40 Degree C To +85 Degree C 34. Operation Temp: -20 Degree C To +65 Degree C 35. Humidity: -- Non-condensing