Seiko Cal. 6635 - 199

This Automatic model from 1975 features a 42mm PVD Black case. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-a7bcd36df39e]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1975

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