Seiko Cal. 5691 - 273

The Seiko 5691-273 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-6a491be99d49]

Also known as: Monster, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1971

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