Seiko Cal. 5278 - 709

This Spring Drive model from 1990 features a 41mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-5d34a236be07]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1990

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