Seiko Cal. 4413 - 764

This Spring Drive model from 1975 features a 42mm Hardlex-Coated Steel case. Powered by the 4413 caliber with 30j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-05bd58674d5c]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1975

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