I bought this GPS about 2 months ago and I take it everywhere I go! The GPS III+ is a great all-around unit that has capabilities to send you anywhere in the world with amazing accuracy AND that fits in the palm of  your hand. The unit includes a 12-parallel satellite receiver which can  lock your position in about 10 seconds (depending on your position in the  world) and with about 50 feet accuracy. Other features include: detailed  basemap (roads, coastline, cities etc), illuminated variable light display  (adjustable lighting), heading, altitude, sunrise/sunset, speed  information, highly informative timer system, and much more. The casing on  the unit is very durable and the display glass is scratch resistant (nice  feature). Along with all of this, the unit is also waterproof rated to 30  feet (wouldn't try it though, the battery compartment cover seems a bit  cheesy).