821E is a powerful GPS Datalogger comes with MTK II chipset works from your pocket, handbag and backpack. Flat design for easy to put inside the pocket of most bags. 821E allows you to log your route by setting the interval of time/ distance/ speed and intelligent auto gear function and motion sensor for smart logging to save memory and power. 5Hz update rate for high speed application recording. Easy to use and through user friendly utility, it can display the tracks on Google Earth/Map.