Seiko Cal. 6635 - 489

The 6635-489 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6635 caliber with 31j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-3a57d278a38e]

Also known as: Shogun, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1987

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