Seiko Cal. 6121 - 690

The Seiko 6121-690 represents an important milestone in Seiko's 1967 lineup. Powered by the 6121 caliber with 31j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-ef7845b3026e]

Also known as: Monster, Shogun

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1967

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