Seiko Cal. 5690 - 447

The Seiko 5690-447 represents an important milestone in Seiko's 1971 lineup. Powered by the 5690 caliber with 27j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-36b575fad1a8]

Also known as: Turtle, Monster

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1971

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