Seiko Cal. 3840 - 472

The Seiko 3840-472 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-d28c9dff3969]

Also known as: Monster, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1974

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