Seiko Cal. 7139 - 746

The 7139-746 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7139 caliber with 22j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-135c0a67fce9]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

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