Seiko Cal. 3837 - 636

This Quartz model from 1987 features a 36mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-4940f9e21f47]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1987

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