Feature:1. Positioning function: GPS satellite + beidou satellite + base station double star positioning, positioning more accurate 2. Recording function: high fidelity DSP technology noise reduction, multiple stereo remote recording. One key recording, clear & clear 3. Remote pick-up: click the sound on the APP, enter the phone number that can be answered, & the device can dialthe phone number to hear the situation around the device 4. Historical view: keep the device running track within 3 months 5. Alarm function: virtual electronic fence, set the regional scope, & can report to the police beyond this range. Subjected to certain intensity vibration alarm, low electric quantity alarm 6. Power saving function: super long standby, up to 10 days, simple operation, strong magnetic free installation Specification: Material ABSModel MK20GPS Positioning Accuracy 5 (m) Alarm Mode Fence Alarm, Mobile Alarm, Vibration Alarm External Dimensions 4.3MM * 1.8MMBattery Type Polymer Battery Waterproof Function Life Waterproof Antenna Type Built-in Positioning Satellite Bei Dou GPSSM Frequency Band 850 / 900 / 1800 / 1900 Mhz Package Included:1 XCar GPS Tracker