Seiko Cal. 6654 - 397

The Seiko 6654-397 represents an important milestone in Seiko's 1968 lineup. Powered by the 6654 caliber with 28j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-d2f2cf599342]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1968

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