Seiko Cal. 0712 - 457

This Spring Drive model from 1978 features a 40mm Two-Tone case. With its 18mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-c15f66be36af]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1978

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