Seiko Cal. 5649 - 987

This Spring Drive model from 1975 features a 36mm PVD Black case. Powered by the 5649 caliber with 24j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-bf60d7d8ab6c]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1975

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