Seiko Cal. 5648 - 308

The Seiko 5648-308 represents an important milestone in Seiko's 1968 lineup. Powered by the 5648 caliber with 22j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-fbc54cba49b5]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1968

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