Seiko Cal. 6613 - 836

This Hand-Winding model from 1972 features a 38mm Stainless Steel case. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-ebd81fd9db78]

Also known as: Bullhead, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1972

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