The P18 is a smart device that integrates cash register, mobile payment, and inventory management functions. It features an embedded financial payment PAD, enabling seamless interaction and an intuitive payment experience. The multifunctional display can be used independently, meeting both in-store management and checkout needs, as well as mobile payment and inventory counting requirements. The base is multifunctional, capable of charging the PAD and supporting expansion to connect multiple devices. The device also features a hidden secondary screen that softly displays the transaction amount during payment, enhancing the interactive experience.