Seiko Cal. 6140 - 639

This Hand-Winding model from 1975 features a 42mm Gold-Plated case. Powered by the 6140 caliber with 21j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-92a865e85c69]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1975

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