Seiko Cal. 6139 - 315

The Seiko 6139-315 represents an important milestone in Seiko's 1970 lineup. Powered by the 6139 caliber with 23j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-836bc123bfa1]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1970

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