Seiko Cal. 6221 - 577

The Seiko 6221-577 represents an important milestone in Seiko's 1972 lineup. Powered by the 6221 caliber with 28j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-619126bfb595]

Also known as: Turtle, Monster

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1972

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