Introducing the first SiRF Star III based Serial GPS receiver with WAAS/EGNOS* support for enchance position accuracy. The GlobalSat BU-353 Water-Proof USB Mouse GPS Receiver is powered by SiRF Star III chipset is a new-generation GPS chipset that has extremely high sensitivity, lower power usage and more rapid time-to-fix. It works very well even in reduced visibility environment or weak signal tracking such as traveling in mega city and surrounded by tall buildings. It is very small and it`s waterproof! It also comes with a magnetic mounting so that you could mount it on the roof of your car! The GlobalSat BU-353 Water-Proof USB Mouse GPS Receiver can be utilized in a variety of applications that require a magnetic mounting with waterproof configuration. With non-slip on the bottom and the special compact design, the GlobalSat BU-353 Water-Proof USB Mouse GPS Receiver is completely self-contained and waterproof. It incorporating the latest SiRF Star III GPS chipset and an active patch antenna so you receive a high degree of GPS accuracy. Typical application can include marine environments, aviation, commercial use such as fire truck, police cars and utility vehicles and buses. The extended 5 feet long allows for easy routing to your PC / Laptop / ibook / PowerBook. Combining both design and technology into an iF product design award 2006 winning GPS receiver the Globalsat BU-353 integrates the latest SiRFStarIII chipset into a stylish GPS mouse. This results in one of the most sensitive and accurate GPS receivers on the market today. WAAS/EGNOS may not be available in your location.