Seiko Cal. 5239 - 304

The 5239-304 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5239 caliber with 29j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-706d09d8230e]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1990

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