Introducing this latest gadget, The new GlobalSat BU-353 Water-Proof USB Mouse GPS Receiver. This gadget is a power-driven technology by SiRF Star III chipset, a new-generation GPS chipset that has enormously high sensitivity, low power usage and more speedy time-to-fix. Its working ability is the best in low visibility location or frail signal tracking such as traveling in big city that are surrounded by tall buildings. The size of this latest gadget is very small, and it is waterproof! This latest device can be applied to marine environments, aviation, and commercial use such as fire truck, cars, utility vehicles and buses.