Seiko Cal. 7138 - 641

The 7138-641 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7138 caliber with 35j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-3e99c2638378]

Also known as: Shogun, World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1974

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