Specification:Model: GF-07Communication frequency: 850/900/1800/1900MHzCharge output: Input AC110-220V 50/60HzCharging input: Output DC5.0V 300-500mABattery: 3.7VStorage temperature: -40°C to +85°COperating temperature: -20°C to +55°COperating Voltage: 3.4-4.2V DCStand-by current: ≈2.5mATurn on the voice control current: ≈30mACall current: ≈150mAGSM positioning time: 25SBasic parameters: Frequency band GSM850/900/1800/1900MHzFeatures:1. Precise GPS Positioning: Provides accurate tracking for real-time location updates.2. Voice-Activated Callback: Enables sound monitoring and automatic alarm call-back functionality by configuring via SMS.3. Magnetic Design: Easily attaches to metallic surfaces for convenient placement.4. Electronic Fence Alarm: Sends notifications when the device moves beyond a defined geofence area.5. Long Standby Time: Efficient power consumption ensures extended device operation.6. Compact Size: Portable and easy to conceal for diverse usage scenarios.Package Includes:1 x GF-07 GPS Locator