Seiko Cal. 3840 - 531

The Seiko 3840-531 represents an important milestone in Seiko's 1972 lineup. It features a Champagne dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-0e59d3646536]

Also known as: Samurai, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1972

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