Seiko Cal. 4433 - 139

The Seiko 4433-139 represents an important milestone in Seiko's 1974 lineup. Powered by the 4433 caliber with 20j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-83013aabcefc]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1974

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