Wow! It’s good to see this Small Casio Protrek. The watch has in-built GPS (Global Positioning System). This watch is a good example of miniaturization and applied technology. Casio introduced long back in 1999, this watch to market. After that, many other small GPS watches from different companies made their way in. By the end of September Casio will be back with its new smallest GPS watch which will be available in the form of the GPR-100 priced at JPY54,000 (USD$464). If you are planning to buy a new GPS system then please either wait for the launch of this new watch or buy Protrek and bag in two-in-one watch. If you love to travel then this watch will be of real help to you. Moreover, they claim that it happens to be the most accurate timepiece.