NE20 SII Automatic Watch Movement NE20 is a SII product manufactured by the Seiko Group of Companies. This is a self-winding (Automatic) watch movement, 3 hands (hour/minute/sweep second), 12 ligne, with a diameter of 27.40 mm and a movement height of 5.32 mm. This is a 24 jewel movement with a indicator for day at the 3 o'clock position, a date indicator at the 6 o'clock position and a power reserve indicator at the 9H30 position. Hand dimensions: 150/90/21/21 (hour/minute/sweep second). Stem is a part number 351-183.