Seiko Cal. 0739 - 430

The 0739-430 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0739 caliber with 25j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-e96e28909947]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1975

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