Seiko Cal. 7039 - 731

The 7039-731 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7039 caliber with 29j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-ff377f85a9c2]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1972

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