Seiko Cal. 3887 - 523

This Automatic model from 1967 features a 41mm PVD Black case. Powered by the 3887 caliber with 30j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-04de1dbf7e8a]

Also known as: Turtle, Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1967

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