Seiko Cal. 5646 - 256

The Seiko 5646-256 represents an important milestone in Seiko's 1979 lineup. Powered by the 5646 caliber with 28j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-cbea1e7667d1]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1979

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