Miyota Cal. 6T51 is a compact automatic movement popular with OEMs. It is a full-featured movement running at 28,800 A/h with bilingual day and quickset date wheels. Cal. 6T51 has been in the Miyota catalog since at least 2000 and is likely related to the Miyota Cal. 82 family. As of 2019, no Cal. 6 movement is listed on the Miyota website, though Cal. 6T51, 6T15, and 6T28 were still listed in the 2019 catalog.
Cal. 6T51 has a central winding rotor that operates in the clockwise direction and can also be wound by hand. The movement measures 19.80 mm (8.75 ligne) in diameter and is 5.98 mm thick.
Cal. 6T51 is part of a family of closely related movements.