Seiko Cal. 5640 - 409

This Automatic model from 1988 features a 38mm Gold-Plated case. Powered by the 5640 caliber with 25j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-a3e298673946]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1988

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