Seiko Cal. 6139 - 121

The Seiko 6139-121 represents an important milestone in Seiko's 1986 lineup. Powered by the 6139 caliber with 24j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-84c8877a7439]

Also known as: Helmet, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1986

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