Seiko Cal. 7138 - 956

This Spring Drive model from 1986 features a 38mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-5c15b7b337fc]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1986

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