Seiko 4S71

	Brand:	Credor, Seiko
	Family:	Seiko 4S Family
	Height:
	Jewels:	25
	Reserve:	40 hours
	Frequency:	28,800 A/h
	Winding:	Automatic, Bi-Directional Automatic Winding
	Diameter:	25.60 mm (11.5 ligne)
	Complications:	Hacking Seconds, Hand Winding
	Hands:	Central Hour Hand, Central Minute Hand, Central Seconds Hand

Distinguishing Technical Characteristics
Clockwise Balance Cock Screw Regulator Balance Balance at 4:30 Barrel at 12:00
Production: 1995 – 2003
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Cal. 4S71 was a high-end time-only automatic produced by Seiko for the Credor watch line. It was part of the Seiko 4S family, which itself was derived from the historic Seiko 52 stream of movements.

It is a simple movement with central hour, minute, and seconds hands and no date or other complications.

Cal. 4S71 was only used in the Credor GCBB line of watches.

• Credor Pacifique GCBB999
• 1995-2003 Credor Pacifique GCBB998
• 1999-2003 Credor Pacifique GCBB997
• Credor Pacifique GCBB996
• Credor Pacifique GCBB994

Early Seiko 4S Movements

From the 1992 introduction of the Seiko 4S family through the early 2000s, Seiko used the 4S line as a high-end movement for diverse watches, including the SUS military, Alpinist, and Titanium diver. Most of these models were retired shortly after introduction, and the series of simple 4S movements was phased out by 2003.