The new-generation single-piece rechargeable OBU uses a triple-mode composite power design with solar power, battery power, and Type-C charging to address insufficient power and battery-life concerns. It is equipped with a high-definition OLED display with high contrast and clear status icons for an intuitive user experience. The product also includes an ETC transaction switch and supports optional intelligent voice announcement for high-frequency and controllable ETC scenarios including expressway passage, vehicle-road collaboration, smart parking, and smart refueling.