Seiko stop-watch movements

Mechanical, manual-winding:

90ST:

9011A - 1/5th sec. 30 or 60 min total

9011B - 1/5th sec. 15 or 30 min total, integration

9011C - 1/10th sec. 15 or 30 min total

9011D - 1/10th sec. 15 or 30 min total, integration

9011E - 1/30th sec. 5 min total, stroke pitch

9011F - 1/10th sec. 15 min total, special integration with immediate start (flyback?)

9011G - 1/5th sec. 60 min total, integration

9011H - 1/10th sec. 15 or 30 min total, integration (revised version of 9011D)

9011I - 1/10th sec. 15 or 30 min total (revised version of 9011C)

9011K - 1/5th sec. 30 or 60 min total (revised version of 9011A)

9011N - 1/5th sec. 60 min total, integration

9011P - 1/10th sec. 30 min total, integration

9011S - 1/5th sec. 60 min total

9011R - 1/10th sec. 30 min total

89ST:

890A (8912)

890B (8922/8909/893)

890C (8941)

88ST:

8800A - 1/5th sec. 30 min total

8800B - 1/10th sec. 15 min total

8800C - 1/5th sec. 30 min total, integration

8800D - 1/10th sec. 15 min total, integration

8800E - 1/30th sec. 5 min total, stroke pitch

8800F - 1/10th sec. 15 min total, integration, special integration with immediate start (flyback) (Basket ball timer).

Quartz, battery, analogue display:

7A07

Quartz, battery, digital display:

87ST