GF07 Mini GPS Tracker Car 2G GSM GPS Tracking Magnetic Real Time Car Locator System Tracking Device Specifications: 1. Appearance size: 3.5cm x 2.0cm x 1.4cm 2. Charging input: AC 110-220V 5060Hz 3. Charging output: DC 5.0V 300-500mA 4. Machine battery: 3.7V 400mAh Li-ion battery 5. Standby time: 12 days 6. Working time 4-6 days 7. Expansion card: support mini TF card 8. Continuous call time: 150-180 minutes 9. Network standard: GSMGPRS 10. Storage temperature: -40 to +85 degree Celsius 11. Operating temperature: -20 to +55 degree Celsius 12. Humidity range: 5%-95% non-condensing 13. GPRS: Upload60, TCPIP 14. Working voltage: 3.4-4.2V DC 15. Standby current: about 2.5mA 16. Turn on voice control current: about 30mA 17. Call current: about 150mA 18. GSM positioning time: 25 seconds 19. Frequency band: GSM 85090018001900MHz 20. Supported countries: China, United Kingdom, France, Germany, Netherlands, Italy, Spain, Portugal, Brazil, Denmark, Russia, Poland, Turkey, Hungary, Thailand, Greece, Indonesia, Malaysia, Vietnam, Myanmar, Pakistan, Iraq, Saudi, Arabia, United States, Kazakhstan, Outer Mongolia, Dubai, etc. Special warnings: When the tracker power is low (below 5%), please charge it in time. If the battery is in a deficient state for a long time, it will inevitably cause deep discharge of the battery, affecting the battery performance and life. In severe cases, the battery will not be charged or scrap. If it is not in use, please charge the battery to 60%-80%, disconnect the power supply and then store it. When it is not in use for a long time (three months), please charge it regularly to protect the battery.?? In order to better use this machine, please read carefully and follow the above, thank you.