Seiko Cal. 5648 - 309

The Seiko 5648-309 represents an important milestone in Seiko's 1969 lineup. Powered by the 5648 caliber with 36j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-a7cf09ed6f4a]

Also known as: Monster, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1969

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