Seiko Cal. 6139 - 687

The 6139-687 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6139 caliber with 34j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-864d8ad3dddc]

Also known as: Crown, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1966

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