Leaving technical descriptions aside it’s a little battery powered gadget that can find out exactly where you are (in terms of longitude and attitude). Most devices now days can continuously record a series of points, effectively “memorizing” the path you walk. Most devices today can also calculate total distance traveled, speed, and trip time and can also take you back on a recorded trail to the origin. Out of many models available in the market find out what is most suitable for Hiking in Sri Lanka