6T51 Miyota Automatic Watch Movement is a ladies Mechanical Automatic. Movement is an 8 3/4 ligne movement, 19.80 mm in diameter with a thickness of 5.98 mm. 21 jewel, 28,800 beat, 3 hand movement (hour / minute / second) with day/date window at the 3 o'clock position. Hand dimensions are 120/70/17 (h/m/s). For stem use part number 065-117.