Seiko Cal. 5240 - 739

The Seiko 5240-739 represents an important milestone in Seiko's 1967 lineup. Powered by the 5240 caliber with 19j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-a377420aad94]

Also known as: Monster, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1967

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