Seiko Cal. 4438 - 617

This Automatic model from 1965 features a 45mm Titanium case. Powered by the 4438 caliber with 28j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-bfef2331be37]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

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