Seiko Cal. 7138 - 618

This Hand-Winding model from 1967 features a 37mm Hardlex-Coated Steel case. Powered by the 7138 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-6f4e4c45e650]

Also known as: Turtle, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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