Seiko Cal. 5641 - 137

The Seiko 5641-137 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-e9b436080f3d]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1987

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