Seiko Cal. 5663 - 931

This Hand-Winding model from 1970 features a 46mm Gold-Plated case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-048db7b0c924]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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