Seiko Cal. 6381 - 751

This Hand-Winding model from 1966 features a 46mm Hardlex-Coated Steel case. With its 22mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-dd8d1878a21c]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1966

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