Objectives: I was looking for a really small GPS data logger, rather than using a larger device like a GPS. The idea is to have a separate device to capture waypoint tracks, rather than doing it with a GPS. The idea of these data loggers is to have a really small device to capture a "track log" (Eg: waypoints every minute, or every 20 m), and then display them on some other device via Bluetooth. For example, display them on a laptop when you get home. The device itself has no display, so it is not useful in the field as for navigation unless accompanied by a PocketPC.