Seiko Cal. 5637 - 197

This Automatic model from 1987 features a 42mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-5c36e59f6755]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1987

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