Seiko Cal. 3891 - 921

This Spring Drive model from 1969 features a 41mm Hardlex-Coated Steel case. With its 22mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-c7c7a4e01429]

Also known as: Panda, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1969

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