Seiko Cal. 6634 - 827

The Seiko 6634-827 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-5ed663cbb6c7]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1979

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