ROBOTIME presents a mechanical stagecoach model inspired by 17th-18th century England, where such vehicles were a common mode of transportation, as depicted in the Sherlock Holmes series. This 3D wooden puzzle accurately replicates the stagecoach design while incorporating a functional miniature power core. When wound, the spring-driven gear mechanism transfers motion to the rear wheels, propelling the model forward while playing the "Greensleeves" melody. The design includes carefully crafted details such as storage boxes, travel trunks, and small decorative elements. A distinctive feature is the inclusion of a formally dressed mouse figure that moves up and down with the carriage's motion. This model introduces dip-dyed components in select areas, adding color contrast compared to traditional natural wood puzzles. ROBOTIME provides assembly support for this product, with assistance available if needed during construction. The puzzle consists of precision-cut wooden pieces designed for straightforward assembly.