The TK309 is a mini GPS for vehicle tracking, used as a tracking solution for rental cars, fleet management, public transportation tracking, taxi management and tracking, motorcycles and E-bike anti-theft systems. It has a small size, built-in antenna and waterproof design; it is easy to install and hide, with a power supply voltage range of 9V to 80V, therefore, it can meet the tracking and security demands of a wide range of vehicles.