Seiko Cal. 7136 - 421

The Seiko 7136-421 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-330986799331]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1969

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