Seiko Cal. 6687 - 531

The 6687-531 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-ba85ad653b5b]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1982

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