Seiko Cal. 5690 - 577

The Seiko 5690-577 represents an important milestone in Seiko's 1977 lineup. Powered by the 5690 caliber with 19j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-36d04673fb34]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

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