Seiko Cal. 6257 - 289

This Spring Drive model from 1978 features a 46mm PVD Black case. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-565466298d8e]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1978

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