ISA 9231/1910 Quartz Watch Movement ISA 9231/1910 Quartz Watch Movement is a gents 3 hand movement (hour/minute/sweep seconds) with a moon phase dial at the 6 o'clock position. This is a 10 1/2 ligne with a diameter of 23.30 mm, with a movement height of 4.13 mm, yellow plates, 0 jewels, battery 371. This is a Swiss parts, assembled in China watch movement. Hand dimensions: 120/70/20 (hour/minute/sweep second).