Real time location tracking: Track asset and vehicle location on real time by sms, pc website tracking system and android app Strong magnetic cover: with the strong magnetic rear cover, the device can be stick on the container, vehicle bottom, easy hidden. Free installation 30 days long life battery: 5000mah battery, 30days stand by time with sleep mode Sleep mode: Set sleep mode to save power, make it can use long time. Geo fence alarm / drive area limit alarm: Set up a geo -fence for the gps to monitor it`s movement area, the gps will alarm when vehicle out of this area. Over speed alarm: Real time remote monitor driver behavior, send alarm information to manager when vehicle over speed. Audio monitoring: You can call the gps device and listen the vehicle inside voice when driver unknown. The gps device not vibrate or ring. Mileage statistics: Calculate vehicle driving mileage in a period of time. Sms tracking location: Remote real time get vehicle location by sms. Send an sms to the gps, it will reply a link with vehicle location and speed information. History daily report: Check the vehicle work information in whole day, the location in anytime, the speed, time, acc condition, stop time, stop place etc. Android app: You can real time tracking vehicle on our android app, one account can check all of your vehicles. Udp / tcp / http: Vehicle gps tracker device support communication protocol: udp, tcp and http. If you have your own tracking server, our device can work on your server. Vehicle history trace line : You can check the vehicle history drove line on last 90days, choose every day and time you want, you can see the vehicle location, speed, mileage days ago. Gps & a-gps(lbs¡ªlocation based service): Using global satellite positioning technology, lbs(location based service) technology(when it cannot location via gps, the device will get the location information via lbs automatically) One piece one color box 95*60*25mm 200g