Seiko Cal. 3887 - 370

This Spring Drive model from 1974 features a 35mm PVD Black case. It features a Black dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-4ae0c9614655]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1974

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