... feature: 1,GPS tracker with waterproofshell 2,build-in shock sensor 3, large capacity battery Product Description: Model: GPS104This tracker ... lost vehicles, cargo.Movement alarm, Geo-fence alarm, shock sensor alarm, remote monitoring.3,Support map viewing on mobile phone ... and Resume8,Active and deactive DOOR ALARM, ACC ALARM, SENSOR ALARM by remote control9,tracking function by timing and frequency10 ...