Seiko Cal. 6154 - 439

This Spring Drive model from 1988 features a 41mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-9e1772e9a94c]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1988

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