The Seiko 1N01 quartz watch movement is a ladies three hand caliber with hour minute and sweep seconds measuring 4¾ × 6½ lignes or 10.80 × 14.50 mm with a thickness of 2.20 mm and total height of 4.14 mm. This 0 jewel movement uses hand sizes 110/65/20 operates on a 379 battery and is supplied with stem part number 351 807 with a 0.70 mm tap 12 thread.