Seiko Cal. 4526 - 739

The 4526-739 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4526 caliber with 34j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-3c20ac53ac7d]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1967

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