Seiko Cal. 6637 - 704

This Hand-Winding model from 1991 features a 35mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-69e228ef82cd]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1991

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