Seiko Cal. 5254 - 981

This Spring Drive model from 1991 features a 40mm Hardlex-Coated Steel case. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-70d10e846f1a]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1991

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