Seiko Cal. 3891 - 510

This Spring Drive model from 1969 features a 46mm Titanium case. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-d9f98b1c162d]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1969

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