... SMS communicationStandard tracking in real time through: unit PIN, location, speed, time, direction, alarm statusAutomatic time reports, or through commands. ... optional )No installtion charge GSM and GPS antenna are embedded in the unitReal time track model Level IP56 waterproof ( ... (Battery Life 7-15 days) 4 kind location way !Use latitude and longtitude to locate Use link to locateUse SMS to locate ...