The Seiko 7N89 quartz watch movement is a ladies’ two-hand movement with hour and minute hands, featuring a date display at the 3 o’clock position. It is a 6¾ × 8 ligne movement measuring 15.30 mm × 17.80 mm, with a thickness of 2.60 mm, and the cannon pinion extends 1.12 mm above the main plate. The hand sizes are 110/65 (hour/minute), and the movement contains no jewels. It operates on a 371 battery and is supplied with a stem, part number 351-892, which has a 0.80 mm tap (tap 11).
