Seiko Cal. 6139 - 408

Seiko 6139-408

The 6139-408 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6139 caliber with 28j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-6b38bd6444e2]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Navy
Jewels
28j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1991

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