Seiko Cal. 6139 - 660

This Solar model from 1973 features a 37mm Titanium case. Powered by the 6139 caliber with 21j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-9380e4455ba6]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1973

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