Seiko Cal. 5644 - 943

This Spring Drive model from 1988 features a 36mm Stainless Steel case. Powered by the 5644 caliber with 26j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-a2aef3e2b382]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1988

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