Features: Set multiple functions of security, tracking, monitoring surveillance, emergency alarms and management in its entirety. Specifications: Type: Magnetic GPS Locator Material: Plastic Quantity: 1pc Color: Black Talk Time: 150 180 minutes Standby Time: 12 days Working Time: 4 6 days Expansion Card: Mini TF card Network: GSM or GPRS GSM Band: 850 or 900 or 1800 or 1900Mhz GMS Locating Time: 25 Seconds Power Input: AC 110 220V 50 or 60Hz Power Output: DC5V 300 500mA Battery Capacity: 3.7V 400mAh Li ion Battery (Included) Working Voltage: 3.4 4.2V DC Storage Temp.: 40 to 85 celsius Operation Temp.: 20 to 55 celsius Humidity: 5 percent 95 percent non condensing Size(LxWxH): 4.2x2.5x1.6cm or 1.7x1x0.6in Package Weight: 100g or 3.5oz Package List: 1 x Locator (Battery Included) 1 x User Manual 1 x USB Line Usage: Record: Send number 555 to alarm phone, begin to record. Sound monitoring: Send number 666 to alarm phone GPS track: Send number 777 to alarm phone, the phone receive geographic position and map link. Positioning trajectory: Send number 102 to alarm phone. Delete Memory Card Content: Send Number 445 to alarm phone. Reboot the phone: Send number 999 to alarm phone, start success after 1 minute. Reset the phone: Send number 444 to alarm phone. Restore factory settings: Send message " x x x " to alarm phone.