Seiko Cal. 0731 - 845

The Seiko 0731-845 represents an important milestone in Seiko's 1982 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-8150ae1cb52d]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1982

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