Seiko Cal. 6310 - 504

This Spring Drive model from 1975 features a 45mm Two-Tone case. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-ee87854a6784]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1975

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