Seiko Cal. 5639 - 837

The Seiko 5639-837 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-a619493321a3]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1972

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