Seiko Cal. 6139 - 255

The Seiko 6139-255 represents an important milestone in Seiko's 1967 lineup. Powered by the 6139 caliber with 36j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-7934f31bfa22]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1967

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