Seiko Cal. 5644 - 140

This Spring Drive model from 1987 features a 36mm Stainless Steel case. Powered by the 5644 caliber with 35j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-3df913fd9462]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1987

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