Seiko Cal. 6615 - 643

The Seiko 6615-643 represents an important milestone in Seiko's 1977 lineup. Powered by the 6615 caliber with 20j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-57e062822b7f]

Also known as: Turtle, Pogue

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1977

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