Seiko Cal. 6631 - 616

The Seiko 6631-616 represents an important milestone in Seiko's 1986 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c20294a7ead7]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1986

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