Seiko Cal. 7136 - 406

This Spring Drive model from 1992 features a 36mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-59492d2a70ad]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1992

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