Seiko Cal. 6331 - 177

The Seiko 6331-177 represents an important milestone in Seiko's 1987 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-aeafd4b327d8]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1987

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