The eZ430-Chronos is a wearable wireless development system that comes in a sports watch. The Chronos may be used as a reference platform for watch systems, a personal display for personal area networks, as a wireless sensor node for remote data collection, or simply as a watch. The unique form factor for a wireless development system makes it the world’s first customizable tool contained in an intelligent sports watch. The eZ430 includes all the hardware and open-source software to enable creation of a complete wireless application that runs on the wrist. Even though it looks like a typical wrist watch, the Chronos is actually packed with cutting edge, low power wireless technology and several on board sensors. Although it is loaded with features, it can last for a year on a single battery since it is based on ultra-low power MSP430 microcontroller technology. Typically, wireless development systems with similar functionality would cost hundreds of dollars, but the Chronos is a revolutionary system that is affordable by anyone that would like to work with the wireless world.