Description:1. Battery: 3.7V 400mAh Li-ion Battery2. Stand-by: 12 days3. Working Time: 4-6 days4. Expansion Card: Micro SD Card (not included)5. Calling Time: 150-180 min6. Net work Type: GSM/GPRS7. Storage Temperature: -40 - 858. Work Temperature: -20 - 559. Humidity Range: 5%-95%10. Frequency Band: GSM 850/900/1800/1900MHz11. Color: White/Black12. Support Country: China、 Britain、 France、 Germany、 Holland、 Italy、 Spain、 Portugal、 Brazil、 Denmark、 Russia、 Poland、 Turkey、 Hungary、 Thailand、 Greece、 Indonesia、 Malaysia、 Vietnam、 Myanmar、 Pakistan、 Iraq、 Saudi、 Arabia 、 United States、 Kazakhstan13. Support Language: Chinese/English14. Dimensions: (3.15 x 0.98 x 0.98)" / (8 x 2.5 x 2.5)cm (L x W x H)15. Weigh:200gPacking Content :1 x Car GPS Tracker1 x Manual(Chinese-English)Using Method:1. Preparation: A SIM card. When the user buys a new SIM card、 the GPRS function should be opened、 otherwise、 the function for sending MMS by taking photos would be invalid.2. Starting: Insert SIM card after opening the card cover according to the indicating direction、 the product will automatically switch on the red light with shining four times、 then enter standby state in 30 seconds.3. Binding the master number: Use the mobile phone to send the text message 000 to the alarm locator、 the machine will reply a text message; Set; Binding + the master number.4. GPRS positioning query: Use the mobile phone to send the text message 777 to the alarm locator、 the machine will reply a link of location and Google map. Open this link to appear the location map and text address instructions to get more accurate location.5. Callback by voice: Use the mobile phone to send the text message 888 to the alarm locator、 the machine will reply a text message ( the main machine's all features、 such as On / Off、 battery、 binding number、 signal strength、 frequency start-up etc ).6. Restart the main machine: Use the mobile phone to send the text message 999 to the alarm locator、 then wait for 1 min to restore normally.7. Close function: Use the mobile phone to send the text message 444 to the alarm locator、 the machine will reply a text message ( Reset; all tasks are can celled ).8. Voice query around the product: Directly dial the card number in the alarm locator、 then hear the sound around the alarm locator after a few seconds ( the alarm locator doesn't make any sound and light in the process of query )9. Indicator: ON light will be off after it becomes light for 4 times、 low battery indicator will flash quickly.