Seiko Cal. 4445 - 640

This Automatic model from 1969 features a 42mm PVD Black case. Powered by the 4445 caliber with 17j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-311afc3d152d]

Also known as: Turtle, Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1969

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