Seiko Cal. 3839 - 727

The Seiko 3839-727 represents an important milestone in Seiko's 1966 lineup. Powered by the 3839 caliber with 34j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-ed308b6aa433]

Also known as: Monster, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1966

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