Seiko Cal. 5644 - 837

The Seiko 5644-837 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-e2246fb9616e]

Also known as: Samurai, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1982

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